Exodus 40:15-17

Amplified Bible

¹⁵ you shall anoint them just as you anointed their father, so that they may serve as priests to Me; and their anointing shall qualify them for an everlasting priesthood throughout their generations.” ¹⁶ Thus Moses did; in accordance with all that the Lord commanded him, so he did.

¹⁷ Now it happened on the first day of the first month (Abib) in the second year [after the exodus from Egypt], that the tabernacle was erected.