1 Samuel 13:13-14

And Samuel said to Saul, You have done foolishly! You have not kept the commandment of the Lord your God which He commanded you; for the Lord would have established your kingdom over Israel forever; But now your kingdom shall not continue; the Lord has sought out [David] a man after His own heart, and the Lord has commanded him to be prince and ruler over His people, because you have not kept what the Lord commanded you.