Exodus 40:17

14 And take his sons with him and put coats on them;

15 And put oil on them as you did on their father, so that they may be my priests: the putting on of oil will make them priests for ever, from generation to generation.

16 And Moses did this; as the Lord gave him orders, so he did.

17 So on the first day of the first month in the second year the House was put up.

18 Moses put up the House; placing its bases in position and lifting up its uprights, putting in the rods and planting the pillars in their places;

19 Stretching the outer tent over it, and covering it, as the Lord had given him orders.

20 And he took the law and put it inside the ark, and put the rods at its side and the cover over it;