Take the Levites from among the children of Israel, and cleanse them.

Jamieson-Fausset-Brown Bible Commentary

6, 7. Take the Levites . and cleanse them-This passage describes the consecration of the Levites. Although the tribe was to be devoted to the divine service, their hereditary descent alone was not a sufficient qualification for entering on the duties of the sacred office. They were to be set apart by a special ceremony, which, however, was much simpler than that appointed for the priests; neither washing nor anointing, nor investiture with official robes, was necessary. Their purification consisted, along with the offering of the requisite sacrifices (Le 1:4; 3:2; 4:4), in being sprinkled by water mixed with the ashes of a red heifer (Nu 19:9), and shaved all over, and their clothes washed-a combination of symbolical acts which was intended to remind them of the mortification of carnal and worldly desires, and the maintenance of that purity in heart and life which became the servants of God.

Matthew Henry's Concise Commentary

8:5-26 Here we have directions for the solemn ordination of the Levites. All Israel must know that they took not this honour to themselves, but were called of God to it; nor was it enough that they were distinguished from others. All who are employed for God, must be dedicated to him, according to the employment. Christians must be baptized, ministers must be ordained; we must first give ourselves unto the Lord, and then our services. The Levites must be cleansed. They must be clean that bear the vessels of the Lord. Moses must sprinkle the water of purifying upon them. This signifies the application of the blood of Christ to our souls by faith, that we may be fit to serve the living God. God declares his acceptance of them. All who expect to share in the privileges of the tabernacle, must resolve to do the service of the tabernacle. As, on the one hand, none of God's creatures are his necessary servants, he needs not the service of any of them; so none are merely honorary servants, to do nothing. All whom God owns, he employs; angels themselves have their services.