21 Then he brought forward the tribe of Benjamin, clan by clan, and Matri’s clan was taken. Finally Saul son of Kish was taken. But when they looked for him, he was not to be found.

Read 1 Samuel 10:21 Using Other Translations

When he had caused the tribe of Benjamin to come near by their families, the family of Matri was taken, and Saul the son of Kish was taken: and when they sought him, he could not be found.
He 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.
Then he brought each family of the tribe of Benjamin before the LORD, and the family of the Matrites was chosen. And finally Saul son of Kish was chosen from among them. But when they looked for him, he had disappeared!