why is homosexuality NOT a sin? If God deems it so, shouldn't that be enough whether humans agree with it or not?
That's my point, anyone who takes the Bible seriously as the Word of God and that it is perfect and flawless, "knows" that homosexuality is a sin.
There are people (Christians) who try to defend it, but there's really no case if you take the Bible seriously.
The first section includes fairly clear and straightforward references to homosexuality being a sin.
The second section includes verses that seem to have some relevance, although it is not necessarily direct or clear, on the subject.
But the men of Sodom were wicked and sinners before the LORD exceedingly.
Thou shalt not lie with mankind, as with womankind: it is abomination.
If a man also lie with mankind, as he lieth with a woman, both of them have committed an abomination: they shall surely be put to death; their blood shall be upon them.
1 Kings 14:24
And there were also sodomites in the land: and they did according to all the abominations of the nations which the LORD cast out before the children of Israel.
26 For this cause God gave them up unto vile affections: for even their women did change the natural use into that which is against nature:
27 And likewise also the men, leaving the natural use of the woman, burned in their lust one toward another; men with men working that which is unseemly, and receiving in themselves that recompence of their error which was meet.
32 Who knowing the judgment of God, that they which commit such things are worthy of death, not only do the same, but have pleasure in them that do them.
The woman shall not wear that which pertaineth unto a man, neither shall a man put on a woman's garment: for all that do so are abomination unto the LORD thy God.
17 Thou shalt not bring the hire of a whore, or the price of a dog, into the house of the LORD thy God for any vow: for even both these are abomination unto the LORD thy God.
18 Thou shalt not bring the hire of a whore, or the price of a dog, into the house of the LORD thy God for any vow: for even both these are abomination unto the LORD thy God.
The shew of their countenance doth witness against them; and they declare their sin as Sodom, they hide it not. Woe unto their soul! for they have rewarded evil unto themselves.
1 Corinthians 6:9
Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind.
1 Timothy 1:10
For whoremongers, for them that defile themselves with mankind, for menstealers, for liars, for perjured persons, and if there be any other thing that is contrary to sound doctrine;
7 Even as Sodom and Gomorrha, and the cities about them in like manner, giving themselves over to fornication, and going after strange flesh, are set forth for an example, suffering the vengeance of eternal fire.
8 Likewise also these filthy dreamers defile the flesh, despise dominion, and speak evil of dignities.