And thou shalt bring the Levites before the LORD: and the {e} children of Israel shall put their hands upon the Levites:

(e) Meaning, certain of them in the name of the whole.

Wesley's Notes

8:10 The children of Israel - Not all of them, which was impossible, but some in the name of all the princes or chiefs of each tribe, who used to transact things in the name of their tribes. Put their hands - Whereby they signified their transferring that right of ministering to God from the first - born in whose hands it formerly was, to the Levites, and their entire resignation and dedication of them to God's service.

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.