Could you remind me what Jesus specifically said with regard to homosexuality?
Everything mentioned in the Bible was directly from Jesus Christ....Old Testament and New Testament.
John 1:1
�In the beginning was the Word, and the Word was with God, and the Word was God. The same was in the beginning with God. All things were made by him; and without him was not any thing made that was made�
So we know Christ was the Creator God. Christ is also the Word. So when Christ references Gen 2:24 when he speaks in Matthew 19:4-6 he is quoting himself.
Same thing for the following verses for example.
Leviticus 18:22
You shall not lie with a male as with a woman; it is an abomination.
Romans 1: 26-32
26 For this reason God gave them up to dishonorable passions. For their women exchanged natural relations for those that are contrary to nature; 27 and the men likewise gave up natural relations with women and were consumed with passion for one another, men committing shameless acts with men and receiving in themselves the due penalty for their error.
28 And since they did not see fit to acknowledge God, God gave them up to a debased mind to do what ought not to be done. 29 They were filled with all manner of unrighteousness, evil, covetousness, malice. They are full of envy, murder, strife, deceit, maliciousness. They are gossips, 30 slanderers, haters of God, insolent, haughty, boastful, inventors of evil, disobedient to parents, 31 foolish, faithless, heartless, ruthless. 32 Though they know God's righteous decree that those who practice such things deserve to die, they not only do them but give approval to those who practice them.
1 Timothy 1:8-11
8 Now we know that the law is good, if one uses it lawfully, 9 understanding this, that the law is not laid down for the just but for the lawless and disobedient, for the ungodly and sinners, for the unholy and profane, for those who strike their fathers and mothers, for murderers, 10 the sexually immoral, men who practice homosexuality, enslavers, liars, perjurers, and whatever else is contrary to sound[c] doctrine, 11 in accordance with the gospel of the glory of the blessed God with which I have been entrusted.
So Christ does specifically address homosexuality as well as other issues as wrong and sinful along with a description of what true marriage/relationships are to be...because Christ is the Word.