Exodus 29:9

And thou shalt gird them with girdles, Aaron and his sons; for in this one article of dress the likeness between the ordinary priests and the high priest was shown, both classes using an embroidered girdle wrought in the four colors of the Sanctuary, and put the bonnets on them, bind the miter on Aaron and the caps on his sons. And the priest's office shall be theirs for a perpetual statute. And thou shalt consecrate Aaron and his sons, literally, fill their hands, invest them with the dignity and the obligations of their office.