Exodus 40:31

31 Moses and Aaron and Aaron’s sons used water from it 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 and he placed the altar of burnt offering near the Tabernacle entrance. On it he offered a burnt offering and a grain offering, just as the LORD had commanded him.

30 Next Moses placed the washbasin between the Tabernacle and the altar. He filled it with water so the priests could wash themselves.

31 Moses and Aaron and Aaron’s sons used water from it to wash their hands and feet.

32 Whenever they approached the altar and entered the Tabernacle, they washed themselves, just as the LORD had commanded Moses.

33 Then he hung the curtains forming the courtyard around the Tabernacle and the altar. And he set up the curtain at the entrance of the courtyard. So at last Moses finished the work.