If polygamy (marrying multiple spouses at the same time) is a sin, why did so many biblical / historical figures do it?
Answer 2: Perhaps the two most notable of the polygamists recorded in biblical history are David and his son, Solomon. It is most surprising that men so close to God would do something so obviously contrary to Gods standards, yet, that is the reality. Such things would be more expected from pagan rulers, like the pharaohs of Egypt, but not the rulers of Gods chosen people. David began marrying wives even before he became king, while he was still on the run from Saul. Not only did he marry them, but he had multiple children by them (2 Samuel 3:1-5). Were these women legitimately married to David as wives? Yes, for so we are told in the accounts from Scripture. Was it lawful of David to marry these women? No, but he did it anyway. And He answered and said, “Have you not read that He who created them from the beginning made them male and female, and said, ‘for this reason a man shall leave his father and mother and be joined to his wife, and the two shall become one flesh’? So they are no