Exodus 29:6

3 Put these in a basket and take them, with the ox and the two sheep.

4 And let Aaron and his sons come to the door of the Tent of meeting, and there let them be washed with water.

5 Take the robes, and put the coat and the dress and the ephod and the priest's bag on Aaron; put the band of needlework round him,

6 And let the head-dress be placed on his head and the holy crown on the head-dress.

7 Then take the oil and put it on his head.

8 And take his sons and put their robes on them;

9 And put the linen bands round Aaron and his sons, and the head-dresses on them, to make them priests by my order for ever: so you are to make Aaron and his sons holy to me.