Exodus 40:31

31 Moses, Aaron, and Aaron's sons used this water to wash their hands and feet.

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 He put the altar for burnt offerings at the entrance to the Holy Tent, the Meeting Tent, and offered a whole burnt offering and grain offerings on it, just as the Lord commanded him.

30 Moses put the bowl between the Meeting Tent and the altar for burnt offerings, and he put water in it for washing.

31 Moses, Aaron, and Aaron's sons used this water to wash their hands and feet.

32 They washed themselves every time they entered the Meeting Tent and every time they went near the altar for burnt offerings, just as the Lord commanded Moses.

33 Then Moses set up the courtyard around the Holy Tent and the altar, and he put up the curtain at the entry to the courtyard. So Moses finished the work.