Does the Bible prove to Christians that morality is subjective?
The Bible is the only source of objective morality. I don’t know who was marrying 7 year old girls, but I have never seen a verse in the Bible condoning it. Divorce is allowed in situations where adultery is committed. Slavery was necessary in Biblical days, but is not in most societies today. The verse you referenced included specific instructions to follow in war. In this case, taking slaves was the modern-day equivalent to taking POW’s. Clovis- that doesn’t mean its “right-ness” has changed. It just isn’t necessary anymore.