2 Timothy 3:16-17 (ASV)
16 Every scripture inspired of God is also profitable for teaching, for reproof, for correction, for instruction which is in righteousness.
17 That the man of God may be complete, furnished completely unto every good work.
2 Peter 1:21 (ASV)
21 For no prophecy ever came by the will of man: but men spake from God, being moved by the Holy Spirit.
Homsexuality condemned in the book of Romans
Romans 1:27-28 (ASV)
27 and likewise also the men, leaving the natural use of the woman, burned in their lust one toward another, men with men working unseemliness, and receiving in themselves that recompense of their error which was due.
28 And even as they refused to have God in their knowledge, God gave them up unto a reprobate mind, to do those things which are not fitting;
Homsexuality condemned in the book of Leviticus. Rememner, the early Christians had the Old Testament and it was what they studied.
God said that a man having sex with another man is an abomination.....so much so that God required that that person be put to death. But the fact that God does not say we should stone such a person today does not make it less a sin. But God's true Church will put out of its congregation anyone that practice that lifestyle or supports it.
Leviticus 20:13 (KJV)
13 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.
Hebrew Word: תּוֹעֵבָה
Phonetic Pronunciation: to-ay-baw'
Root: act part of <H8581>
Cross Reference: TWOT - 2530a
Part of Speech: n f
Vine's Words: Abomination
or to`ebah, to-ay-baw'; feminine active participle of <H8581> (ta`ab); properly something disgusting (moral), i.e. (as noun) an abhorrence; especially idolatry or (concrete) an idol :- abominable (custom, thing), abomination.
— Strong's Talking Greek & Hebrew Dictionary
Usage Number: 1
Part Of Speech: Noun
Strong's Number: <H8441>
Original Word: תּוֹעֵבָה, tŰʿēb‚
Usage Notes: "abomination; loathsome, detestable thing." Cognates of this word appear only in Phoenician and Targumic Aramaic. The word appears 117 times and in all periods.
First, tŰʿēb‚ defines something or someone as essentially unique in the sense of being "dangerous," "sinister," and "repulsive" to another individual.
Vine's Expository Dictionary of Old Testament and New Testament Words.
But homosexuality is not the only thing that God considered an abomination or a sin.......and they are not repeated in the New Testament as a sin. Here's one example, Jesus never said it was a sin for siblings to marry each other. So does that mean it’s now ok to do it if there is no law against it in whatever Country one might live in? Can two sisters marry each other or two brothers? Or is that only a brother and a sister than can marry each other? What about an aunt? Can a man marry his aunt, because that was not mentioned by Jesus as a sin either?