(31-35) The "robe of the ephod" was a frock or tunic, reaching from the neck to below the knees. It was put on over the head, for which a hole was left (Exodus 28:32). Josephus says that it had no sleeves; and it would seem that the upper portion, above the waist, was wholly, or almost wholly, concealed by the ephod and breastplate; but the lower portion, from the waist downwards, formed the outer dress of the high priest, and was conspicuous. The plain blue contrasted well with the variegated ephod and the sparkling breastplate. The robe had no ornament excepting round the bottom, where it was fringed with alternate bells and pomegranates. The pomegranates were a decoration, and nothing more; but the bells served a purpose, which is explained in Exodus 28:35.
Verses 31-35. - THE ROBE OF THE EPHOD. Underneath the ephod and breast-plate the high priest was to wear a robe, or frock, wholly of blue. This robe was to have a hole for the head at the top, and was to be woven without seam (Exodus 39:22). It was put on over the head, like a habergeon or coat of mail, and probably reached below the knee. Josephus says that it had no sleeves. Verse 31. - All of blue. This plainness and uniformity offered a strong contrast to the variegated hues of the breast-plate and ephod, and threw those portions of the attire into greater prominence. If the blue used was indigo, the effect of the contrast must have been heightened
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.
And thou shall make the robe of the ephod all of blue. This was a different garment from the ephod, was longer than that, and was under it, and of different materials: that was made of gold, blue, purple, scarlet, and fine linen; this only of linen, and wholly of a blue colour, without any curious figures upon it, as were on that: in Exodus 39:22, it is said to be of woven work; it was woven from top to bottom, and had no seam in it: so Josephus says (b),"the coat did not consist of two parts, nor was it sewed upon the shoulder, nor on the side, but was one long piece of woven work;''and such was the seamless coat our Lord Jesus Christ wore, literally understood, John 19:23 and both were an emblem of his perfect righteousness, which has nothing of the works of men joined to it, to justify them before God, and make them acceptable to him: for this robe signifies the robe of Christ's righteousness, the best robe; it has its name from a word which signifies prevarication or sin, because it covers the sins of God's people; the matter of it was linen, and so fitly points at the fine linen, that is the righteousness of the saints, and being blue or sky coloured may denote heaven and happiness, which that entitles to, see Matthew 5:20, the Septuagint version calls it a garment down to the feet, using the same word as in Revelation 1:13 and fitly agrees with that righteousness with which all Christ's members are covered and justified, Isaiah 45:24.
(31-35) The "robe of the ephod" was a frock or tunic, reaching from the neck to below the knees. It was put on over the head, for which a hole was left (Exodus 28:32). Josephus says that it had no sleeves; and it would seem that the upper portion, above the waist, was wholly, or almost wholly, concealed by the ephod and breastplate; but the lower portion, from the waist downwards, formed the outer dress of the high priest, and was conspicuous. The plain blue contrasted well with the variegated ephod and the sparkling breastplate. The robe had no ornament excepting round the bottom, where it was fringed with alternate bells and pomegranates. The pomegranates were a decoration, and nothing more; but the bells served a purpose, which is explained in Exodus 28:35.
(b) Antiqu. l. 3. c. 7. sect. 4.