1 Samuel 15-16 Saul Rejected

When Saul was sent by God to exterminate the Amalekites. While he defeated them in battle, he took their king as prisoner and the best of their livestock and goods as plunder. He further raised a monument to himself at Carmel. When confronted by Samuel, he deflected the blame to his troops. This disobedience and lack of character caused God to reject Saul as king and choose David as his replacement.