1 Samuel 13:13-14

Samuel said to Saul, “You have acted foolishly; you have not kept the commandment of the LORD your God, which He commanded you, for [if you had obeyed] the LORD would have established your kingdom over Israel forever. But now your kingdom shall not endure. The LORD has sought out for Himself a man (David) after His own heart, and the LORD has appointed him as leader and ruler over His people, because you have not kept (obeyed) what the LORD commanded you.”