(6) And washed them with water.--As the first initiatory rite of the consecration, Moses caused Aaron and his sons to bathe (see Leviticus 16:4), thus symbolising their purification from sin. Where the phrase "to wash with water" is used without specifying any particular part or parts of the body, as in Genesis 19:2; Genesis 24:32, Exodus 30:19; Exodus 30:21, Deuteronomy 21:6, it denotes the washing or bathing of the entire body. This was not done in the presence of the people, but in a baptistry, behind a curtain. During the second Temple the sacerdotal immersion could not be effected in a vessel, but had to take place in a hollow made in the ground, containing at least twenty-four cubic feet of water. The installation of the priest, which is here conducted by Moses, as the giver and representative of the Divine law, was during the second Temple performed by the Sanhedrin, who "sat in Moses' seat."
Verse 6. - Washing, robing, anointing, sacrificing, are the four means by the joint operation of which the consecration is effected. The washing, or bathing, took place in the sight of the people. The whole of the person, except so much as was covered by the linen drawers (Exodus 28:42), was washed. The symbolical significance is clear. Cleansing from sin precedes clothing in righteousness and spiritual unction.
8:1-13 The consecration of Aaron and his sons had been delayed until the tabernacle had been prepared, and the laws of the sacrifices given. Aaron and his sons were washed with water, to signify that they ought to purify themselves from all sinful dispositions, and ever after to keep themselves pure. Christ washes those from their sins in his own blood whom he makes kings and priests to our God, Re 1:5,6; and those that draw near to God must be washed in pure water, Heb 10:22. The anointing of Aaron was to typify the anointing of Christ with the Spirit, which was not given by measure to him. All believers have received the anointing.
And Moses brought Aaron and his sons,.... To the laver which was in the court of the tabernacle
and washed them with water; to show that they should be clean that bear the vessels of the Lord, and offer the sacrifices of the people; all that are in public office in the house of God ought to have both clean hands and a pure heart, to hold the mystery of the faith in a pure conscience, and to be of a pure and holy conversation; and indeed all that are made kings and priests to God, as all the saints are, they are washed from their sins in the blood of Jesus, Revelation 1:5.
and washed them with water; to show that they should be clean that bear the vessels of the Lord, and offer the sacrifices of the people; all that are in public office in the house of God ought to have both clean hands and a pure heart, to hold the mystery of the faith in a pure conscience, and to be of a pure and holy conversation; and indeed all that are made kings and priests to God, as all the saints are, they are washed from their sins in the blood of Jesus, Revelation 1:5.