http://www.esvbible.org/Psalm+44/
http://www.esvbible.org/Numbers+8/
http://www.esvbible.org/Song+of+Solomon+6/
http://www.esvbible.org/Hebrews+6/
BEFORE THEY BEGAN THEIR DUTIES FOR THE FIRST TIME, the Levites were set apart by a ritual God himself established to "make them ceremonially clean" (Num. 8:5-14).
The details need not concern us here. What we shall reflect on is the theological reasoning God gives for ordering things this way.
Part of it we have heard before: this is by way of review. God himself has "taken them as my own" (8:16), i.e., he has selected the Levites "from among the other Israelites" (8:6) to be peculiarly his, "in place of the firstborn, the first male offspring from every Israelite woman" (8:16). The rationale is reviewed: this stems from the Exodus, from the first Passover, when the firstborn of the Egyptians were struck down but not the firstborn sons of Israel (8:17-18).
But now a new element is introduced. God has "taken" the Levites to be peculiarly his, and, having "taken" them, he has also "given" them as "gifts" to Aaron and his sons, the chief priests, "to do the work at the Tent of Meeting on behalf of the Israelites and to make atonement for them so that no plague will strike the Israelites when they go near the sanctuary" (8:19). So God has "taken" them and then "given" them to his people.
Formally, of course, God has "given" them to Aaron and his sons, but since the work the Levites do is for the benefit of all Israel, there is a sense in which God has given the Levites to the entire nation. The pattern is spelled out again ten chapters later (Num. 18:5-7). God says to Aaron, "I myself have selected your fellow Levites from among the Israelites as a gift to you" (18:6).
The closest New Testament parallel is found in Ephesians 4. By his death and resurrection, Christ Jesus "led captives in his train and gave gifts to men" (Eph. 4:8). The words are ostensibly quoted from Psalm 68:18, where the Hebrew text says that God received gifts from men. But it has been argued, rightly, that Psalm 68 assumes such themes as those in Numbers 8 and 18, and that in any case Paul is melding together both Numbers and Psalm 68 to make a point. Under the new covenant, Christ Jesus by his triumph has captured us, and to each one of us (Eph. 4:7) he has apportioned grace and then poured us back on the church as his "gifts to men."
That is how we are to think of ourselves. We are Christ's captives, captured from the race of rebellious image-bearers and now poured out as God's "gifts to men." That invests all our service with unimaginable dignity.
Numbers 8; Psalm 44; Song of Songs 6; Hebrews 6