'Tribe' in the Bible

And Saul answered and said, Am not I a Benjamite, of the smallest of the tribes of Israel? and my family the least of all the families of the tribe of Benjamin? wherefore then speakest thou to me after this manner?

So Samuel brought all the tribes of Israel near, and the tribe of Benjamin was taken.

And he brought the tribe of Benjamin near by their families; and the family of the Matrites was taken; and Saul the son of Kish was taken: but when they sought him, he could not be found.