Leviticus 16:3-4

Here do I not see JESUS, strongly represented by the high priest? Observe, the garments of Aaron. He is not clothed in his rich glorious vestments on this day; because it was a day of humiliation. He had not on the Ephod with the precious stones; but clean linen only. And did not this represent the SON of GOD, who when he died on the cross, as the sin-offering of his people, laid aside the glories of the GODHEAD, and appeared in the humble garment of mortality. Hebrews 2:16.