1 Samuel 13:13-15

13Samuel said, ‘You have done a foolish thing. You have not obeyed the command of the Lord your God. If you had obeyed the Lord, he would have let you and your family rule Israel for ever.

14But because of what you have done, your kingdom will not continue. Instead, the Lord will find a man who pleases him. The Lord has decided that this man will become the leader of his people, instead of you. He will do that because you have not obeyed his command.’

15After that, Samuel left Gilgal. He went to Gibeah in the land of Benjamin's tribe. Saul counted the soldiers who were still with him. There were about 600 men.