Please let me know if my question is stupid or trivial so that I would do better in the future. Thank you for the opportunity to ask questions here and I hope that this is the right place to do it. English is my second language so I apologise in advance if I misspell some words.
I have some questions about morality as reflected in the Bible, more specifically about God’s moral character as it apperas in the Old Testament. I was wondering about certain aspects of God’s law and His will regarding humanity in the early stages of history. I know this is a complex subject so I will try to be as specific as possible.
For instance the part in Genesis 1:28 - “And God blessed them, and God said unto them, Be fruitful, and multiply, and replenish the earth, and subdue it …”
How exactly could only 2 people replenish the earth? Many people (especially of other religious beliefs) say that all this replenishing was done through incest - their children, grandchildren, niece, nephews, cousins etc. The “cain’s wife” thing is just a small part. More over this is also confusing because in Leviticus 18 God tells the people of Israel not to do what the Egiptians were doing regarding sexuality, child sacrifice or simply uncovering the nakedness of anyyone “near of kin to him”. It is a pretty solid list and a very important chapter in the Bible because the people of Israel were to live very different from the Egiptians and other cultures from that time(not only from this point of view of course)
My questions are:
When did all those things described in Leveticus 18 suddenly had to be forbiden and considered “wickedness”? Were they not always sin in the eyes of God? Did God just let it go until there were enough people in the world after which He said - oh, by the way, you can’t do this anymore because it is disgusting, wicked, wrong and appalling? Did all of this had to go on because there wasn’t any other way? What if Adam and Eve hadn’t fall into sin, would things have gone the same way in order to replenish the earth? I found a lot of stuff about this from christians, theologians and pastors online but I found their explanations very lacking with things like perfect dna of Adam and Eve, purity of genes etc.
Also about killing:
It seems to me that taking another human life, in the Old Testament, is only a sin when it is done for the wrong reason or when it is not aligned with the will of God. It is understandable from a theological point of view but it begs the question what sin means as an objective reality. Is the divine moral framework of God that incapsulates both New and Old Testament, described somewhere so that a nonchristian person could start to understand it? I know you need the Holly Spirit to guide you, I understand that but I am really struggling here, could only a true christian begin to understand these things in the right way(what ever that is)?
Please let me know if you need more clarifying on any of these things from my part.
Thank you and I hope my long, desperate and confusing rant doesn’t offend anyone.