Straight to the point, here they are:
6. Plenty of things that have definite relevance to any claims about human sexuality (but which are conveniently ignored by shallow interlocutors who seem to think “One punch can kill” is an effective debating ethos, rather than an anti-violence campaign slogan).
That’s right, Jesus said nothing about homosexuality, except for a bunch of stuff He did say that have fairly clear implications when it comes to various approaches to sexuality.
I’m sure you’ve encountered some variation of the above list by now (unspoilt by my #6 of course). The numbering varies, or sometimes the claim is just made outright (eg; “Jesus never said anything about homosexuality, therefore…), but the substance of the assertion is the same. Because Jesus either didn’t have an Aramaic or Greek synonym for “gay” in His vocabulary, or did but chose never to use it in His extensive teaching ministry – we’re to believe that homosexuality can’t have been a big deal in His eyes.
The problem is that the biblical evidence suggests that Jesus was not only well aware of the existence of homosexual sex, but He was in fact against it. That He chose not to name it exclusively on any number of occasions (or that, perhaps, the Gospel writers simply did not include what He did teach on this issue for unknown reasons), was probably largely to do with the demographic make-up of His usual audience. Or perhaps it has something to do with “queer” sexualities not being viewed as “special” then in the manner they are now (instead they were just one of several ways a person could conduct their sexual urges in rebellion to God). But more on those points later.
Here are six things Jesus said that really have an awful lot to say when applied to questions surrounding homosexuality. [Most of these points have been made by others at different times, but I’m seeking here to collate them in a way that presents a clear picture on the issue. I’ll include links to several similar articles at the end of part 2].
1. Sexuality: Jesus spoke of human sexuality in terms of exclusively binary sex/gender categories: “Have you not read that the One who created them from the beginning made them male and female…” (Matt 19:4, LEB).
In context, Jesus is responding to marital relationships between men and women. He begins His answer with the above statement of complementary sexuality. God’s original creation involved a male human and a female human, with complementary sexual organs, capable of being joined together to bring about pleasure and procreation.
While the old “Adam and Eve, not Adam and Steve” slogan is trite (and guilty of attempting the same throwaway-line debating tactics I’m criticising here), the point behind the poor framing is valid. Jesus had no theological notion of humans of the same sex being created to enjoy each other’s bodies in a sexual way. He approached all questions of sexuality and marriage from the starting point of Man and Woman being specially created by God as sexually distinct from one another.
2. Marriage: Jesus’ teaching on marriage and sexual union naturally flowed on from this framework. “And [Jesus] answered and said, “Have you not read that the one who created them from the beginning made them male and female and said, ‘On account of this a man will leave his father and his mother and will be joined to his wife, and the two will become one flesh’? So then, they are no longer two but one flesh. Therefore what God has joined together, man must not separate.” (Matthew 19:4-6).
Jesus moves from his opening statement of binary human sexuality to a consequential picture of human marriage and sexual union. Marriage and sex (which are properly inseparable in Jesus’ mind, teaching and social/religious context) take place when an adult male leaves the familial arrangement founded by his parents (the very sexual/marital relationship that resulted in his own existence) and enters into his own, new, familial and sexual relationship with a woman. When the man and woman are “joined together” in matrimony as husband and wife, their social identities become inseparably linked and their bodies come to share in a oneness as a result of natural, sexual intercourse.
Marriage between Man and Woman 
It’s at this point that Jesus’ silence on homosexuality should trouble LGBTetc; advocates, rather than buoy them. Because the manner in which Jesus has framed human marriage and sexuality makes the idea of male-male sex or female-female marriage a completely foreign concept. Jesus need not go through every possible example of what wouldn’t constitute a legitimate marriage or sexual relationship, as He has stated very clearly (using Creation as His theological foundation) what the genuine article looks like and it doesn’t leave room for innovation or clever redefinition.
3. “Sexual immorality”: Jesus spoke disapprovingly of porneia, which is a catch-all Greek term for immoral sexual practices, i.e. those which do not conform to the moral standards of what is held to constitute legitimate sexuality by the speaker/author. “For from the heart come evil plans, murder, adultery, sexual immorality, theft, false witness, abusive speech.” Matt 15:19
I’ve already attempted to show above (and will continue to do so in the next post), that homosexual intercourse was very much beyond the pale of Jesus’ binary understanding of human sexuality and complementary, heterosexual view of marriage. For Jesus, sexual immorality was any expression of sexuality that deviated from the picture of male-female marital intimacy we’ve seen described already.
While Christian(ish) and non-Christian proponents of gay and lesbian relationships have long sought to emphasise the similarity between committed, loving, homosexual couples and monogamous heterosexual relationships – this is not a relevant objection at this point, as Jesus seems to place the sexual complementarity as the foundational element of marriage – not monogamous exclusivity (this goes a-ways toward explaining the higher level of biblical tolerance for polygamy – as an albeit far-less-than-ideal arrangement in the Old Testament – than homosexual relationships. But that’s one for another day!).
There are three more things Jesus said that help us grasp His “position” on homosexual sex, but they’ll have to wait until part 2.
 Carl Bloch, “Sermon on the Mount” Public Domain.
 Peter Kenjerski “Wedding” flickr (CC BY-NC-ND 2.0)