(21) A statute for ever.--Comp. Exodus 27:21; Exodus 28:43; Exodus 29:9. The external act was to continue so long as the dispensation lasted; the internal purity, which it symbolised, would be required of those who entered the Divine Presence for ever. (See Hebrews 12:14.)

THE COMPOSITION OF THE HOLY OIL.

Verse 21- It shall be a statute for ever. Compare Exodus 27:21; Exodus 28:43; Exodus 29:9: et

30:17-21 A large vessel of brass, holding water, was to be set near the door of the tabernacle. Aaron and his sons must wash their hands and feet at this laver, every time they went in to minister. This was to teach them purity in all their services, and to dread the pollution of sin. They must not only wash and be made clean, when first made priests, but must wash and be kept clean, whenever they went to minister. It teaches us daily to attend upon God, daily to renew our repentance for sin, and our looking to the blood of Christ for remission; for in many things we daily offend.So they shall wash their hands and their feet, that they die not,.... By the immediate hand of God, who would so greatly resent such a neglect of his command; and by how much easier it was to perform it, by so much the more were they inexcusable, and to be treated with greater severity; and this is repeated, that they might carefully observe it, lest they perish:

and it shall be a statute for ever to them, even to him and to his seed, throughout their generations; to be observed by Aaron and his descendants in all ages, as long as their priesthood lasted, until the Messiah should come, and wash all his people, his priests, with his own blood, from all their sins, Revelation 1:5.