Do you mean New Testament? The Old Testament was already complete long before Christ taught from it. In more than one statement He listed the components of the scriptures that had been written to date. (Note the term “all the Scriptures”.)
Luke 24:25-27, 44-45
Then He said to them, “O foolish ones, and slow of heart to believe in all that the prophets have spoken! Ought not the Christ to have suffered these things and to enter into His glory?” And beginning at Moses and all the Prophets, He expounded to them in all the Scriptures the things concerning Himself.
Then He said to them, “These are the words which I spoke to you while I was still with you, that all things must be fulfilled which were written in the Law of Moses and the Prophets and the Psalms concerning Me.” And He opened their understanding, that they might comprehend the Scriptures.
Moses, Prophets, and Psalms were the general divisions of Old Testament Scriptures used at that time. The disciples knew exactly what He meant by these terms. And we know today.
Further, regarding homosexual sex, this is just one act that falls into the category of fornication which Christ spoke against frequently. Marriage cannot be based on a relationship that is in essence fornication, such as sodomy, so Christ listed fornication as the sole grounds for divorce. Christ also spoke of the destruction of Sodom as a literal event which He said would be characteristic of the time in which He will return and for the same reasons.
Matthew 19:9
And I say to you, whoever divorces his wife, except for fornication, and marries another, commits adultery; and whoever marries her who is divorced commits adultery.
Luke 17:28-29
Likewise as it was also in the days of Lot: They ate, they drank, they bought, they sold, they planted, they built; but on the day that Lot went out of Sodom it rained fire and brimstone from heaven and destroyed them all.
Good, quick compilation—thanks.
Of course, gay marriage by definition changes the inclusion in fornication.
I repeat, that which was chosen to be included in the OT was not decided until centuries AD. But, one who chooses to either follow all the dictates of the OT or even all the dictates to everything known as “scripture” in his time is being logically consistent. The logic of those who pick and choose on their own, however, I posit is significantly weaker.
“Matthew 19:9
And I say to you, whoever divorces his wife, except for fornication, and marries another, commits adultery; and whoever marries her who is divorced commits adultery.”
Interesting, now I know where that comes from and why my divorce doesn’t cause me to be an adulterer.
I guess I can take communion now.