Moses also put the turban on Aaron’s head and set the gold plate, the holy diadem, on the front of the turban, as the LORD had commanded him.
God had given Moses orders to consecrate Aaron and his sons to the priests' office, when he was with him the first time upon mount Sinai, Ex. 28 and Exo 29:1, where we have also the particular instructions he had how to do it. Now here we have, I. The orders repeated. What was there commanded to be done is here commanded to be done now, Lev 8:2, Lev 8:3.
Commenting on Leviticus 8:1-13
And he put the mitre upon his head,.... Which was made of fine linen, and was a wrap of that of a considerable length about his head, Exo 28:39. also upon the mitre, even upon his forefront, did he put the golden plate; which was put upon the forehead of the high priest, reaching from ear to ear, and was fastened to the mitre with...
And he put the mitre upon his head; also upon the mitre, [even] upon his forefront, did he put the golden plate, the holy crown; as the LORD commanded Moses. (a) So called, because this superscription, "holiness to the Lord" was graven in it.