We do not know as much as we like to think we do. I get very tired of people assuming they know all the answers.
For instance, Jesus didn’t comment on every possible topic under the sun. He didn’t tell anyone not to get married, he didn’t tell soldiers to stop being soldiers. As attractive as I find the concept of pacifism, I don’t find its expression in the Bible. There really is a difference between murder and what soldiers and police officers have to do, let alone the whole concept of self-defense. In the Old Testament, God himself is described as a “man of war” (Exodus 15:3) and we find an awful lot of divine sanctioned killing of the military sort in the Old Testament–let alone what we see in the Book of Revelation.
Jesus has nothing to say about abortion or homosexuality. In fact, the Bible never talks about abortion at all, and despite all the screaming on the topic, the reality is that the Bible barely mentions homosexuality at all: only in Leviticus 18:22, 20:13; Romans 1:26-27; 1 Corinthians 6:9-11; and 1 Timothy 1:8-11. So yeah, there’s only five sentences in that entire big book that even mention homosexuality–and in those five places it’s probably not talking about the modern expression of homosexuality: think sex slaves, rape and child abuse and you’ll be closer to the mark so far as what I think the Bible is referencing.