Exodus 40:31

31 And Moses and Aaron and his sons washed their hands and their feet thereat:

Exodus 40:31 Meaning and Commentary

Exodus 40:31

And Moses, and Aaron, and his sons, washed their hands and
their feet thereat.
] This laver was for the priests, and Moses, officiating as a priest, washed in it, with Aaron, and his sons, whom he was now about to consecrate to the priest's office, and invest with it by offering sacrifice for them; Jarchi says this was on the eighth day of the consecration.

Exodus 40:31 In-Context

29 And he put the altar of burnt offering by the door of the tabernacle of the tent of the congregation, and offered upon it the burnt offering and the meat offering; as the LORD commanded Moses.

30 And he set the laver between the tent of the congregation and the altar, and put water there, to wash withal.

31 And Moses and Aaron and his sons washed their hands and their feet thereat:

32 When they went into the tent of the congregation, and when they came near unto the altar, they washed; as the LORD commanded Moses.

33 And he reared up the court round about the tabernacle and the altar, and set up the hanging of the court gate. So Moses finished the work.