Num 1:47 But the Levites were not listed along with them by their ancestral tribe. For the LORD spoke to Moses, saying, “Only the tribe of Levi you shall not list, and you shall not take a census of them among the people of Israel. But appoint the Levites over the tabernacle of the testimony, and over all its furnishings, and over all that belongs to it. They are to carry the tabernacle and all its furnishings, and they shall take care of it and shall camp around the tabernacle. When the tabernacle is to set out, the Levites shall take it down, and when the tabernacle is to be pitched, the Levites shall set it up. And if any outsider comes near, he shall be put to death. The people of Israel shall pitch their tents by their companies, each man in his own camp and each man by his own standard. But the Levites shall camp around the tabernacle of the testimony, so that there may be no wrath on the congregation of the people of Israel. And the Levites shall keep guard over the tabernacle of the testimony.” Thus did the people of Israel; they did according to all that the LORD commanded Moses.
Because this was a census of potential soldiers, the Tribe of Levi was not counted. They alone among the tribes of Israel did not go to war because they had special responsibility to God for the priestly duties of Israel. We also must see, that as in the case of Levi, there are some things that can’t – or shouldn’t – be counted. Israel had to appreciate that some of the most important things can’t be counted. (Guzik)
But the Levites … were not numbered among them—They were obliged to keep a register of their own. They were consecrated to the priestly office, which in all countries has been exempted customarily, and in Israel by the express authority of God, from military service. The custody of the things devoted to the divine service was assigned to them so exclusively, that “no stranger”—that is, no person, not even an Israelite of any other tribe, was allowed, under penalty of death, to approach these [Nu 16:40]. Hence they encamped round the tabernacle in order that there should be no manifestation of the divine displeasure among the people. (Brown)
Being set aside for a particular work of God is a blessing. With it comes responsibilities and being accountable for obedience to His direction, purpose, plans, and will. Being willing, “Here am I use me, or send me” is so much more than words that come out of our mouths. It is a solid willing commitment to follow, trust, rely on, and obey the Word of God. This is where the beginning of a servant’s heart, mind, and soul is birthed. It is where the quiet whispers become seemingly shouts of thunderous direction and leading. It is where seeds of God’s Word grow and mature. It is where peace, rest, joy, hope, faith, patience, and love blossom. Where there is no watering of the heart, mind, and soul, there is no growth or maturing. Where there is no feeding there is no growth and strength. God’s Word is the bread of life and living water for the soul. Feed and drink on the Word of God with a hungering and thirsting desire and the blessings of service to others will be manifested new each day in your lives.