Why was Saul rejected as king in favor of David?

Saul was rejected as king due to his persistent disobedience and failure to adhere to God's commands (1 Samuel 15:26). His actions demonstrated a heart that was not aligned with God’s will, leading to God's decision to choose David, a man after His own heart (Acts 13:22). This narrative serves as a profound teaching moment regarding the necessity of obedience and the heart's condition before God. It underscores the reality that human kingship is inherently flawed and that only God's chosen can truly lead His people according to His purposes.