3 Bible Verses about Subdivisions

There was, in the days of Herod the king of Judea, a certain priest, named Zachariah, of the class of Abijah; and his wife was of the daughters of Aaron, and her name was Eliza beth.

It came to pass, while he was officiating as priest before God, in the order of his class, that,

For I do not wish you, brethren, to be ignorant of this mystery lest you be wise in your own conceit that blindness has happened to Israel in part, till the full number of the Gen tiles shall have come in.