37 Put a blue cord on it and put it on the front of the twisted head-dress: 38 And it will be over Aaron's brow, so that Aaron will be responsible for any error in all the holy offerings made by the children of Israel; it will be on his brow at all times, so that their offerings may be pleasing to the Lord. 39 The coat is to be made of the best linen, worked in squares; and you are to make a head-dress of linen, and a linen band worked in needlework.

40 And for Aaron's sons you are to make coats, and bands, and head-dresses, so that they may be clothed with glory and honour.

Matthew Henry's Commentary on Exodus 28:37-40

Commentary on Exodus 28:31-39

(Read Exodus 28:31-39)

The robe of the ephod was under the ephod, and reached down to the knees, without sleeves. Aaron must minister in the garments appointed. We must serve the Lord with holy fear, as those who know they deserve to die. A golden plate was fixed on Aaron's forehead, engraven with "Holiness to the Lord." Aaron was hereby reminded that God is holy, and that his priests must be holy, devoted to the Lord. This must appear in their forehead, in open profession of their relation to God. It must be engraven like the engravings of a signet; deep and durable; not painted so as to be washed off, but firm and lasting; such must our holiness to the Lord be. Christ is our High Priest; through him sins are forgiven to us, and not laid to our charge. Our persons, our doings, are pleasing to God upon the account of Christ, and not otherwise.

Commentary on Exodus 28:40-43

(Read Exodus 28:40-43)

The priest's garments typify the righteousness of Christ. If we appear not before God in that, we shall bear our iniquity, and die. Blessed is he, therefore, that watcheth, and keepeth his garments, Revelation 16:15. And blessed be God that we have a High Priest, appointed of God, and set apart for his work; furnished for his high office by the glory of his Divine majesty, and the beauty of perfect holiness. Happy are we, if by the law spiritually understood, we see that such a High Priest became us; that we cannot draw near to a holy God, or be accepted, but by him. There is no light, no wisdom, no perfection, but from him; no glory, no beauty, but in being like unto him. Let us take encouragement from the power, love, and compassion of our High Priest, to draw near with boldness to the throne of grace, that we may obtain mercy, and find grace to help in time of need.