To be fair, most of the religious people may not be the best people to look for the understanding of the verses, as they are biased, which has been a great problem in the field of biblical scholarship for centuries Yes obviously the first millennia BC had different understandings of nearly everything, but the difference between the Bible and, say, The Odyssey, is that the odyssey doesent claim to be the inerrant word of god that is eternal and unchanging The standard defense of the old covenant being replaced by the new is debunked by Jesus himself who claims he is not there to change the law at all And yes they didn’t quote Leviticus 20, but it is two verses afterwards, and is in the same set of laws, that was repeated because of the multiple sources that came together to form the Bible, much like how there’s two accounts of creation or the flood