1 Samuel 10:19-21

19But today you have rejected your God, who saves you from all your calamities and your distresses, and you have said to him, 'Set a king over us.' Now therefore present yourselves before the Lord by your tribes and by your thousands."

20Then Samuel brought all the tribes of Israel near, and the tribe of Benjamin was taken by lot.

21He brought the tribe of Benjamin near by its clans, and the clan of the Matrites was taken by lot; and Saul the son of Kish was taken by lot. But when they sought him, he could not be found.