And I, behold, I have taken the Levites from among the children of Israel instead of all the firstborn that opens the matrix among the children of Israel: therefore the Levites shall be mine;
Treasury of Scripture
When God miraculously destroyed all the first-born of the Egyptians, he spared those of the Israelites; and, in commemoration of that event, he was pleased to appoint that all the first-born males 'should be set apart unto himself.' God is here pleased to relinquish this claim, and to appoint the whole tribe of Levi to attend his immediate service in their stead.
Alphabetical: among are be behold every first firstborn from have I in instead Israel Israelite Israelites issue Levites male mine Now of offspring place shall So sons taken the woman womb