Whatever "marriage" is, it is plain from the Biblical record that it is neither to be prohibited nor disrespected:

First Timothy 4:1 Now the Spirit expressly says that in later times some will depart from the faith by paying attention to deceitful spirits and doctrines of demons,
2 through the pretensions of liars whose consciences are seared,
3 who forbid marriage and enjoin abstinence from foods which God created to be received with thanksgiving by those who believe and know the truth.
4 For everything created by God is good, and nothing is to be rejected if it is received with thanksgiving;
5 for then it is consecrated by the word of God and prayer.
6 If you put these instructions before the brethren, you will be a good minister of Christ Jesus, nourished on the words of the faith and of the good doctrine which you have followed.
7 Have nothing to do with godless and silly myths. Train yourself in godliness;
8 for while bodily training is of some value [is that true, Schwarzenegger and Stallone?], godliness is of value in every way, as it holds promise for the present life and also for the life to come.
9 The saying is sure and worthy of full acceptance.
10 For to this end we labor and strive, because we have our hope set on the living God, who is the [temporal] Savior of all humans, especially [eternally] of those who believe.
11 Command and teach these things.
12 Let no one despise your youth, but set the believers an example in speech and conduct, in love, in faith, in purity.
13 Till I come, attend to the public reading of scripture [listen up, ACLU & AUSCS & PAW & SPLC!], to preaching, to teaching.
14 Do not neglect the gift you have, which was given you by prophetic utterance when the council of elders laid their hands upon you.
15 Practice these duties, devote yourself to them, so that all may see your progress.
16 Pay attention to yourself and to your teaching; hold to that, for by so doing you will save both yourself and your hearers.

and:

Hebrews 13:4 Let marriage be held in honor among all, and let the marriage bed be non-defiled; for God will judge the immoral and adulterous.

So the concept and reality of "marriage" is vital to define "fornication," to define "adultery" and even to define certain manifestations of "sodomy."

Intriguing it is that "marriage" is not at all adequately defined by the exact wording of the controversial Minnesota 2012 Marriage Amendment, which essentially states:

As should be obvious, the type of union, or for what purpose is not specified by the semantics. Would that be taken to mean a business, ecclesiastical, military, expeditionary, scientific, forensic, industrial, or educational-forum union? Certainly any type of heterosexually-related union is neither necessarily inferred nor insinuated . . . and neither the sexual-partnership joining of homosexuality nor of bestiality is prohibited (whether by inference or insinuation) by the precise wording of the proposed marriage amendment. The mention of the latter two is assuredly excluded by the amendment semantics and thus not specifically proscribed.

Nor does the proposed amendment wording designate the duration of whatever "union." Is it supposed to be taken to mean a temporary or instead a permanent "union" - or possibly both?

What is the character or status of the potential-identity partners of the ONE man with ONE woman "union?"

Can different partners be involved in various expressions of such unions at different times and places - not simply involving only one particular adult male human and only one particular adult female human relating ONLY to each other exclusively - but those particular two humans pairing with other humans (whether termporarily or instead permanently) in some non-specified type of "union" (be that sexual, as physicians together in a clinic, lawyers together in practice, etc.)?

IF (and, I repeat: if) the union is meant to be understood as a sexual union, the wording can quite easily and logically apply to that not merely of a permanently-or-temporarily polygamous or non-polygamous husband with an of-necessity-monogamous wife or concubine . . . but also a permanently-or-temporarily polygamous or non-polygamous husband with a harlot, neighbor friend acting as a whore, escort, masseuse, or even a single divorced woman or adulteress belonging to another man.

This brings us to pondering about the so-far-not-actually-defined real meaning of "marriage."

Turning to Biblical enlightenment, we discover aspects of what the Lord and His Spirit consider "marriage:"

Numbers 30:6 And if she is married to a husband, while under her vows or any thoughtless utterance of her lips by which she has bound herself,
7 and her husband hears of it, and says nothing to her on the day that he hears; then her vows shall stand, and her pledges by which she has bound herself shall stand.
8 But if, on the day that her husband comes to hear of it, he expresses disapproval, then he shall make void her vow which was on her, and the thoughtless utterance of her lips, by which she bound herself; and the LORD will forgive her.
9 But any vow of a widow or of a divorced woman, anything by which she has bound herself, shall stand against her.
10 And if she vowed in her husband's house, or bound herself by a pledge with an oath,
11 and her husband heard of it, and said nothing to her, and did not oppose her; then all her vows shall stand, and every pledge by which she bound herself shall stand.
12 But if her husband makes them null and void on the day that he hears them, then whatever proceeds out of her lips concerning her vows, or concerning her pledge of herself, shall not stand: her husband has made them void, and the LORD will forgive her.
13 Any vow and any binding oath to afflict herself, her husband may establish, or her husband may make void.
14 But if her husband says nothing to her from day to day, then he establishes all her vows, or all her pledges, that are upon her; he has established them, because he said nothing to her on the day that he heard of them.
15 But if he makes them null and void after he has heard of them, then he shall bear her iniquity."
16 These are the statutes which the LORD commanded Moses, as between a man and his wife, and between a father and his daughter, while in her youth, within her father's house.

Song of Solomon 8:12 My vineyard, my very own, is for myself; you, Solomon, may have the thousand, and the keepers of the fruit two hundred.

Ezekiel 16:32 Adulterous wife, who receives strangers instead of her husband!

Hosea 2:2 Plead with your mother, plead - for she is not my wife, and I am not her husband - that she put away her harlotry from her face, and her adultery from between her breasts;
3 lest I strip her naked and make her as in the day she was born, and make her like a wilderness, and set her like a parched land, and slay her with thirst.
4 Upon her children also I will have no pity, because they are children of harlotry.
5 For their mother has played the harlot; she that conceived them has acted shamefully. For she said, 'I will go after my lovers, who give me my bread and my water, my wool and my flax, my oil and my drink.'
6 Therefore I will hedge up her way with thorns; and I will build a wall against her, so that she cannot find her paths.
7 She shall pursue her lovers, but not overtake them; and she shall seek them, but shall not find them. Then she shall say, 'I will go and return to my first husband, for it was better with me then than now.'
8 And she did not know that it was I who gave her the grain, the wine, and the oil, and who lavished upon her silver and gold which they used for Baal.

Mark 10:11 And He said to them, "Whoever divorces his wife and marries another, commits adultery against her;
Mark 10:12 and if she divorces her husband and marries another, she commits adultery."

In view of the above, it is understood why a clergyman would not want to participate in the wedding nor marriage ceremony of either a divorced man nor a divorced woman, which is why many already-divorced persons resort to a civil justice-of-the-peace government official for State licensing or registration of their 'legal' marriage under control and manipulation of the State from there on.

For those of you who have married a divorced person, your penitent attitude about it matters - both concerning whether you (at least in one sense) regret doing such adulterous sin, and also intend to never do it again. Same with us who have fornicated with harlots - despite the overwhelming duress under those dire and lamentable non-asked-for obscenity-caused circumstances and conditions pre-maturely and inordinately inciting us to non-controllable lustful-fulfilment reconnaissance, acquisition, and deployment.

Romans 7:1 Know ye not, brethren, (for I speak to those who know the law,) that that the law has dominion over a person [Gr. anthr(o)pou] as long as he lives?
Romans 7:2 For the married woman is bound by law to her husband so long as he is alive; but if the husband dies, she is clear from the law of the husband:
Romans 7:3 so then, the husband being alive, she shall be called an adulteress if she belongs to another man; but if the husband dies, she is free from the law, so as not to be an adulteress, though she belongs to another man.

First Corinthians 7:39 A wife is bound to her husband as long as he lives. If the husband dies, she is free to be married to whom she wishes, only in the Lord.
First Corinthians 7:40 But in my judgment she is happier if she remains as she is. And I think that I have the Spirit of God.

First Timothy 5:11 But refuse to enroll younger widows; for when they grow wanton against Christ they desire to marry,
First Timothy 5:12 and so they incur condemnation for having violated their first pledge.
First Timothy 5:14 So I would have younger women [Gr. ne(o)teras, not "widows" Gr. ch(e)ras] marry, bear children, manage their households, and give the enemy no cause to revile us.
First Timothy 5:15 For some have already strayed after Satan.

The Scripture verses above make it crystal clear that polygamy (i.e. belonging to more than one husband as long as that husband lives), for a woman, is not an acceptable option. In other words, she can only belong to one husband while he is alive, and is disallowed from having other male partners of whatever marital status during that time.

In fact, she beingdefined a widow or divorced depends upon her belonging to only one husband (considered married - whether State-licensed or cohabitationally not).

Multiple husbands are, of course, mentioned in the following passage:

John 4:17 The woman answered him, "I have no husband." Jesus said to her, "You are right in saying, 'I have no husband';
John 4:18 for you have had five husbands, and he whom you now have is not your husband; this you said truly."

And, concordantly, such women as mentioned above are, by default, adulteresses.

Regarding adult human males, such exclusionary monogamy is not mandatory, and if multiple spouses (be they primary, secondary, etc. wives and/or secondary-status (and sometimes non-'legal' common-law concubines) are simultaneously spouses to the one husband while all or most or some of those women (generally older than 12 years of age) are alive, such patriarchal harem polygamy is never condemned as sinful anywhere in Scripture, though it requires additional (and perhaps quite burdensome) additional responsibilities:

Genesis 4:19 And Lamech took two wives; the name of the one was Adah, and the name of the other Zillah.

Genesis 16:1 Now Sarai, Abram's wife, bore him no children. She had an Egyptian maid whose name was Hagar;
Genesis 16:3 So, after Abram had dwelt ten years in the land of Canaan, Sarai, Abram's wife, took Hagar the Egyptian, her maid, and gave her to Abram her husband as a wife.
Genesis 16:4 And he went in to Hagar, and she conceived; and when she saw that she had conceived, she looked with contempt on her mistress.

Genesis 28:9 Esau went to Ishmael and took to wife, besides the wives he had, Mahalath the daughter of Ishmael Abraham's son, the sister of Nebaioth.

Genesis 32:22 The same night [Jacob] arose and took his two wives, his two [concubines], and his eleven children, and crossed the ford of the Jabbok.

Deuteronomy 21:15 If a man has two wives, the one loved and the other disliked, and they have borne him children, both the loved and the disliked, and if the first-born son is hers that is disliked,
16 then on the day when he assigns his possessions as an inheritance to his sons, he may not treat the son of the loved as the first-born in preference to the son of the disliked, who is the first-born,
17 but he shall acknowledge the first-born, the son of the disliked, by giving him a double portion of all that he has, for he is the first issue of his strength; the right of the first-born is his.

Judges 8:30 Now Gideon had seventy sons, his own offspring, for he had many wives.

First Samuel 1:2 [Elkanah] had two wives; the name of the one was Hannah, and the name of the other Peninnah. And Peninnah had children, but Hannah had no children.

Second Samuel 2:2 So David went up there, and his two wives also, Ahinoam of Jezreel, and Abigail the widow of Nabal of Carmel.

First Chronicles 3:1 These are the sons of David that were born to him in Hebron: the first-born Amnon, by Ahinoam the Jezreelitess; the second Daniel, by Abigail the Carmelitess,
2 the third Absalom, whose mother was Maacah, the daughter of Talmai, king of Geshur; the fourth Adonijah, whose mother was Haggith;
3 the fifth Shephatiah, by Abital; the sixth Ithream, by his wife Eglah;
4 six were born to him in Hebron, where he reigned for seven years and six months. And he reigned thirty-three years in Jerusalem.
5 These were born to him in Jerusalem: Shimea, Shobab, Nathan and Solomon, four by Bathshua, the daughter of Ammiel;
6 then Ibhar, Elishama, Eliphelet,
7 Nogah, Nepheg, Japhia,
8 Elishama, Eliada, and Eliphelet, nine. [Scads of sex involved. Much of the time.]
9 All these were David's sons, besides the sons of the concubines; and Tamar was their sister.

First Chronicles 4:5 Ashhur, the father of Tekoa, had two wives, Helah and Naarah.

First Chronicles 14:3 And David took more wives in Jerusalem, and David begot more sons and daughters [Did he get the Purple-Penie Award by that time? Did it get to be: 'For Faster Service, Take a Number?' To each of the wives and concubines, was he constantly saying: "Honey, I love you?" Eat your heart out, Hef.]

Second Chronicles 24:2 And Joash did what was right in the eyes of the LORD all the days of Jehoiada the priest.
Second Chronicles 24:3 Jehoiada got for him two wives, and he had sons and daughters.

No problem getting family bride attendants at the weddings of any of them? What happens to the beleagered bank account depleted by multiple wives and concubines? Credit cards for each one? Separate bedrooms . . . in the same house . . . for all of them? Keeping local hospital and clinic maternity wards well financed? Home-schooling inside at-home classrooms? Multiple life insurance policies for all? Which one declared 'The Primary Wife' on IRS Form 1040? Lots of step-mommies for all the stepkids? Great family reuinions at the Convention Center?

Sheiks can afford it all.(?)

First Corinthians 7:28 But if you marry, you do not sin, and if a virgin marries she does not sin. Yet those who marry will have worldly troubles, and I would spare you that.

Ephesians 5:25 Husbands, love your wives [plural?], as Christ loved the church and gave himself up for her.

Colossians 3:19 Husbands, love your wives, and do not be harsh with them.

First Timothy 5:8 If any one does not provide for his relatives, and especially for his own family, he has disowned the faith and is worse than a disbeliever.

Even in the New Testament, patriarchal harem polygamy is not disallowed, but is prohibited against some in official congregational-church leadership positions:

First Timothy 3:2 Now a bishop must be above reproach, the husband of one wife, temperate, sensible, dignified, hospitable, an apt teacher
First Timothy 3:12 Let deacons be the husband of one wife, and let them manage their children and their households well.

With all the above in mind, it is - in one sense - easy to understand the natural biological-clock-driven intense craving of a typical modern-day red-blooded man to search for, acquire, and retain not only a gallery of select choice nude-human-female(s) imagery exhibited in "fine-art" paintings, sculptures, "erotic" photos and movies and videos, and so on -- but even a bevy of one-or-more, probably-covertly-non-disclosed-and-thus-non-identified masseuses, escorts, harlots, prostitutes, etc. who have once or repeatedly joined with him when in a state of probable-birthday-suited barity reminescent of Eve before her fall into sin in The Garden of Eden.

First John 5:21 Little children, keep yourselves from [pornographic immodest-style/fashion] idols.

Genesis 2:25 And the man and his wife were both naked, and were not ashamed.

Isaiah 3:16 The LORD said: Because the daughters of Zion are haughty and walk with outstretched necks, glancing wantonly with their eyes, mincing along as they go, tinkling with their feet;
Isaiah 3:17 the Lord will smite with a scab the heads of the daughters of Zion, and the LORD will lay bare their secret parts.

Ezekiel 16:4 "And as for your birth, on the day you were born your navel string was not cut, nor were you washed with water to cleanse you, nor rubbed with salt, nor swathed with bands.
5 No eye pitied you, to do any of these things to you out of compassion for you; but you were cast out on the open field, for you were abhorred, on the day that you were born.
6 And when I passed by you, and saw you weltering in your blood, I said to you in your blood, 'Live,
7 and grow up like a plant of the field.' And you grew up and became tall and arrived at full maidenhood; your breasts were formed, and your hair had grown; yet you were naked and bare.
8 When I passed by you again and looked upon you, hey, you were at the age for love; and I spread my robe over you, and covered your nakedness: yes, I pledged engagement to you and entered into a covenant with you," says the Lord GOD, "and you became mine.
9 Then I bathed you with water and washed off your blood from you [possibly in the bathtub or shower stall?], and anointed you with oil."

Ephesians 5:26 . . . that he might sanctify her, having cleansed her by the washing of water with the word,

Ezekiel 16:37 Therefore, hey, I will gather all your lovers, with whom you took pleasure, all those you loved and all those you loathed; I will gather them against you from every side, and will uncover your nakedness to them, that they may see all your nakedness.

First Corinthians 7: 1 Now concerning the matters about which you wrote. It is well for a man not to touch a woman.
2 But because of the temptation to immorality, each man should have his own wife and each woman her own husband.
3 The husband should give to his wife her conjugational copulation rights, and likewise the wife to her husband.
4 For the wife does not rule over her own body, but the husband does; likewise the husband does not rule over his own body, but the wife does.
5 Do not refuse one another [for sexual approach, caress, and mutual-genital connection] except perhaps by agreement for a season, that you may devote yourselves to prayer; but then come together [for sexual approach, caress, and mutual-genital connection] again, lest Satan tempt you through lack of self-control.

Hebrews 4:13 And before him no creature is hidden, but all are open and laid bare [TSA-airport-scanned X-ray-visible?] to the eyes of him with whom we have to do.

Revelation 3:17 For you say, I am rich, I have prospered, and I need nothing; not knowing that you are wretched, pitiable, poor, blind, and naked [with loose-long-haired mopheadedness, and warm-weather sleeveslessness, slackslessness in shorts, and soxlessness in flipflop sandals].
Revelation 3:18 Therefore I counsel you to buy from me gold refined by fire, that you may be rich, and white garments to clothe you and to keep the shame of your nakedness from being seen, and salve to anoint your eyes, that you may see.
Revelation 3:19 Those whom I love, I reprove and chasten; so be zealous and repent.

It becomes evident, then, that marriage consists of a permanent state of sexually-oriented belonging, exclusively with the ones (in the case of a male human) or one (in the case of a female human).

Added to that, the suggestion and consent to propose and engage in such sexually-oriented belonging must first be uttered and/or written on record before such sexually-oriented belonging and consequential ramifications thereafter, occur.

Therefore, a man must not approach a girl or woman and commence sexual connection with her unless he not only first determines if she is or is not already married to someone else, but also if she is willing to first become his wife or concubine before suggesting or proceeding with sexual connection involving her. If she does agree, such is the start of a 'marriage.'

Likewise, a girl or woman is not Scripturally authorized to seductively expose whatever body parts of her to any human male which possibly or probably would incite to erotic desire that potentially-arousable human male (whether singularly or a group of individuals) unless she first gets his permission to belong to him as his own primary, secondary, etc. wife or [additional?] concubine . . . the sensuous intent of NOT applying the following:

Second Corinthians 5:4 For while we are still in this tent, we sigh with anxiety; not that we would be unclothed, but that we would be further clothed, so that what is mortal may be swallowed up by life.

is instead intended with:

Isaiah 47:2 [related-subject paraphrasing] [Get ready to do burlesque for me] . . . strip off your robe, uncover your legs . . .[jump into the whirlpool with me]
Isaiah 47:3 Your nakedness shall be uncovered, and your [captivating glory] shall be seen. I will take [erogenous pleasure], and [I'll give you all my erect rigidity just where it should go].

Ezekiel 16:25 [related-subject paraphrasing] . . . you [displayed] . . . your beauty, spreading your legs . . . multiplying your [romantic marital conjugationalizing].

Song of Solomon5:3 I had taken off my clothes, how could I put it on? I had bathed my feet, how could I dirty them?
Song of Solomon5:4 My beloved put his hand to the latch, and my heart was thrilled within me.
Song of Solomon5:5 I arose to open to my beloved, and my hands dripped with myrrh, my fingers with liquid myrrh, upon the handles of the bolt.

Song of Solomon 7:8 I say I will climb the palm tree and lay hold of its branches. Oh, may your breasts be like clusters of the vine, and the scent of your breath like apples,

So, instead of sexually harassing or potentially harassing any non-soliciting human male in (or potentially coming into) general public view of him with immodest misattire (whatever the excuse or irrationalization), a human female must first inquire of him if he wants her to become and be his wife or concubine.

Wearing of a left-hand 4th-finger "purity ring" gives no grounds to sadistically tantalize any man a woman currently does not admittedly belong to, imposing porno-indecent/public-nuisance loose longer-than-mouth-level hair not tied into a single back-of-head ponytail or up in a chignon, sleeveslessly-naked arms, slackslessly-nude legs, or bare feet in flipflop sandals.

It is the woman's obligation to do that, because:

First Timothy 2:8 I desire then that in every place . . .
9 . . . that women should be adorned modestly and sensibly in decent apparel, not with plaited hair or gold or pearls or costly attire
10 but by good works, as befits women who profess religion.
11 Let a woman learn in silence with all submissiveness.
12 I allow no woman to teach or to have authority over men; she is to keep silent.
13 For Adam was formed first, then Eve;
14 and Adam was not deceived, but the woman was deceived and became a transgressor.
15 Yet woman will be saved through bearing children, if she continues in faith and love and holiness, with sobriety.

And it is the man's obligation to make sure that the woman who has exhibited and/or is exhibiting any erotically-inticing image (in any form, be it in sculptures or paintings, magazine or internet photos or videos, etc.) of herself to him which he sees first has consented to become and be either his wife or concubine.

If not, neither he is 'married' to her nor is she 'married' to him.