John Calvin Reformed @genevareformer

5. And the Lord spake unto Moses. This passage contains two heads: first, That the Levites should be set apart for the ministry of the sanctuary and altar; and, secondly, That they should obey the chief priests of the family of Aaron, and do nothing except by their authority and command.

Matthew Henry Presbyterian @wholebiblehenry

Here, I. The family of Aaron is confirmed in the priests' office, Num 3:10. They had been called to it before, and consecrated; here they are appointed to wait on their priests' office: the apostle uses this phrase (Rom 12:7), Let us wait on our ministry.

Commenting on Numbers 3:1-13

John Gill Reformed Baptist @doctorgill

And the Lord spake unto Moses,.... After he had given him the order for the numbering the children of Israel, and for the manner of their encampment and journeying: saying; as follows.