30 He placed the basin between the tent of meeting and the altar and put water in it for washing,

Read Exodus 40:30 Using Other Translations

And he set the laver between the tent of the congregation and the altar, and put water there, to wash withal.
He set the basin between the tent of meeting and the altar, and put water in it for washing,
Next Moses placed the washbasin between the Tabernacle and the altar. He filled it with water so the priests could wash themselves.