[Ali Imran]

Let me ask you, was King David sentenced to death for having an affair with Bathsheba and ordering the killing of  her husband, or did  their innocent child die for his/her parents sin?

I disbelieve that story in the Bible. We believe King David, pbuh, was appointed by God as a prophet and a messenger, as a guide for the children of Israel. Did God make a mistake in that appointment? You believe that because you believe the Bible's narrative. 

The aristocrats among the children of Israel were an insolent bunch. They were the same even during the time of the son of Mary, pbuh. They made lies about prophets of God and they wrote stuff with their own hands and have you believe that it is from God. Yes, I strongly believe they spread lies about King David and I have plenty of arguments to support that.

Btw, those aristocrats among the Israelites didn't just spread lies about prophets, they also killed them.