Homosexuality is a sin...just as sodomy....fornication....rape...prostitution...adultery.....and a number of other sexual acts are considered sins....
Sodomy--
1.anal or oral copulation with a member of the opposite sex.
2.copulation with a member of the same sex.
And the word sodomy comes from Sodom- the ancient city in the bible which was destroyed by God and known for its unnatural and wicked sexual sins.
If God didn't approve of homosexual acts..it would be safe to assume that he wouldn't approve of same sex civil unions....Sex is usually the act that consummates a marriage (isn't it?). Also, loving someone of the same sex doesn't make a person a homosexual....it's the sexual desire/lust and act that makes a person a homosexual....
Genesis 19:4-5
4 Before they had gone to bed, all the men from every part of the city of Sodom—both young and old—surrounded the house. 5 They called to Lot, “Where are the men who came to you tonight? Bring them out to us so that we can have sex with them.”
Jude 1:7
In a similar way, Sodom and Gomorrah and the surrounding towns gave themselves up to sexual immorality and perversion. They serve as an example of those who suffer the punishment of eternal fire.
Leviticus 18:22
“‘Do not have sexual relations with a man as one does with a woman; that is detestable.
Leviticus 20:13
“‘If a man has sexual relations with a man as one does with a woman, both of them have done what is detestable. They are to be put to death; their blood will be on their own heads.
Romans 1:26-27
26 Because of this, God gave them over to shameful lusts. Even their women exchanged natural sexual relations for unnatural ones. 27 In the same way the men also abandoned natural relations with women and were inflamed with lust for one another. Men committed shameful acts with other men, and received in themselves the due penalty for their error.
1 John 2:16
For everything in the world—the lust of the flesh, the lust of the eyes, and the pride of life—comes not from the Father but from the world.
1 Thessalonians 4:3-4
It is God’s will that you should be sanctified: that you should avoid sexual immorality; that each of you should learn to control your own body in a way that is holy and honorable,
1 Corinthians 7:2
But since sexual immorality is occurring, each man should have sexual relations with his own wife, and each woman with her own husband.
Colossians 3:5
Put to death, therefore, whatever belongs to your earthly nature: sexual immorality, impurity, lust, evil desires and greed, which is idolatry.
1 Corinthians 6:9
Or do you not know that wrongdoers will not inherit the kingdom of God? Do not be deceived: Neither the sexually immoral nor idolaters nor adulterers nor men who have sex with men
1 Timothy 1:10
for the sexually immoral, for those practicing homosexuality, for slave traders and liars and perjurers—and for whatever else is contrary to the sound doctrine
Jude 1:7
In a similar way, Sodom and Gomorrah and the surrounding towns gave themselves up to sexual immorality and perversion. They serve as an example of those who suffer the punishment of eternal fire.