What was David’s worst sin? Every Sunday School child knows the answer to that question: his adultery with Bathsheba and murder of her husband Uriah (2 Sam. 11-12).
There’s no doubt that David’s double sin against Bathsheba and Uriah is heinous. Following David’s sin, his family begins to implode. David’s son Amnon rapes his daughter, Tamar, Absalom murders Amnon in response and then attempts to overthrow his father and is ultimately killed. David’s sin was a direct violation of two of the most sacred moral laws: adultery and murder, and his family or reign would never be the same.