3 Bible Verses about Subdivisions

In the days of Herod, king of Judea, there was a priest named Zechariah, of the division of Abijah; and he had a wife of the daughters of Aaron, and her name was Elizabeth.

Now while he was serving as priest before God when his division was on duty,

I do not want you to be ignorant of this mystery, brothers, so that you may not be conceited: Israel has experienced a hardening in part until the full number of the Gentiles has come in.