3 Bible Verses about Subdivisions

There was in the days of Herod, king of Judaea, a certain priest named Zachariah, of the course of Abijah; and he had a wife of the daughters of Aaron, and her name was Elizabeth.

And it came to pass, that, while he was serving as priest before God in the order of his course,

For I would not have you ignorant, brethren, of this mystery, lest ye should be wise in your own conceits, that blindness hath to some extent come upon Israel, until the fullness of the gentiles shall have come in.