Num 8:5-7 And the LORD spoke to Moses, saying, “Take the Levites from among the people of Israel and cleanse them. Thus you shall do to them to cleanse them: sprinkle the water of purification upon them, and let them go with a razor over all their body, and wash their clothes and cleanse themselves.
Num 8:13-14 And you shall set the Levites before Aaron and his sons, and shall offer them as a wave offering to the LORD. “Thus you shall separate the Levites from among the people of Israel, and the Levites shall be mine.
Num 8:16-17 For they are wholly given to me from among the people of Israel. Instead of all who open the womb, the firstborn of all the people of Israel, I have taken them for myself. For all the firstborn among the people of Israel are mine, both of man and of beast. On the day that I struck down all the firstborn in the land of Egypt I consecrated them for myself,
Num 8:21-22 And the Levites purified themselves from sin and washed their clothes, and Aaron offered them as a wave offering before the LORD, and Aaron made atonement for them to cleanse them. And after that the Levites went in to do their service in the tent of meeting before Aaron and his sons; as the LORD had commanded Moses concerning the Levites, so they did to them.
Consecration of the Levites for their service in the sanctuary. – The choice of the Levites for service in the sanctuary, in the place of the first-born of the people generally, has been already noticed in Numbers 3:5., and the duties binding upon them in Numbers 4:4. But before entering upon their duties they were to be consecrated to the work, and then formally handed over to the priests. (Keil)
Though this seems to design no other but their appointment and separation to their work and service, as ministers to the priests of the Lord; and so as Aaron did not assume the honour of priesthood to himself but was called of God, the Levites did not take the honour of their office to themselves but had it by the appointment and call of God: and cleanse them; with water, by sprinkling the water of purification on them, and by washing their bodies and clothes with water; which outward washing was a sign of moral purity, which was necessary to their employment in the service of the sanctuary; for though there was no particular uncleanness on them, either ceremonial or moral, but what was common to men; yet it was proper, by such outward rites, to put them and others in mind, that they which are employed about holy things should be eminently pure and holy; and as their business was to carry holy things, to bear the sacred vessels of the sanctuary from place to place when needful, they ought of all men to be clean, Isaiah 52:11, and in this they were emblems of the ministers of the word, who ought to be pure, as in heart, so in life and conversation, and be examples of purity to others. (Gill)
Being set apart for service is a calling to every believer. It is in this service to God that our hearts will find satisfaction. It is not as though we pick the service to which we think we are best suited, but rather we are to do that which the Lord has called us to do. We are His creation for His pleasure to use for His plans and purposes. How should we conduct our lives in light of being set apart for His service?
Lord God, guide me, fill me, lead me, and make Your will, plan, and purposes alive in me so that I might better honor and glorify You.