1 Samuel 13:13-15

Amplified Bible

¹³ 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. ¹⁴ 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.”

¹⁵ Then Samuel arose and went up from Gilgal to Gibeah of Benjamin. And Saul assembled and counted the people who were still with him, [only] about six hundred [fighting] men.