How do you think Noah's family supposedly repopulated the world?
When Noah built his arc it was only TWO of every animal. How did their kids have kids? And God created Adam and Eve not Adam and Eve and Madam and Steve so clearly incest goes right back to the beginning.
Of course, I mean who did Adam and Eves sons have sex with? Obvious answer mum or the unknown sisters.
The Christian God commanded incest quite a few times.
I noticed that some arguments against this is that it wasn't incest until he ordained it to be in leviticus, which is not how language works.
It was commanded that after the population grew too large, that incest was to be made obsolete
Well...yes and no. I am going to lean towards "no". The Christian Bible directly teaches NOT to commit incest. It does, however list countless cases of incest that are not condemned.
Leviticus 18:6 None of you shall approach to any that is near of kin to him, to uncover their nakedness: I am the LORD. Of course incest was how Adam and Eve's children populated things. But at a certain point God said, okay, that is enough. There are enough of you now where you do not have to rely on that anymore. Yes, it was incest still before this. But it was not considered sin before this. The question was does the Bible condone incest. It clearly does not. It may accurately record people who committed it after this point historically, but that is not the same as condoning it.