Thomas Aquinas Commentary Jeremiah 33:18

"neither shall the priests the Levites want a man before me to offer burnt-offerings, and to burn meal-offerings, and to do sacrifice continually." — Jeremiah 33:18 (ASV)

1. Here, the author speaks of the restoration of the priesthood. Just as the kingdom is restored in Christ and in his members, so also is the priesthood. For inasmuch as he is a king, he is also a priest: You are a priest forever according to the order of Melchizedek (Psalms 110:4). And he made his members kings and priests: You have made us a kingdom and priests for our God (Revelation 5:10). He offered himself as an offering to God, as a pleasing fragrance (Ephesians 5:2). He also makes his members offer spiritual sacrifices to God. The priests and the Levites, the sons of Zadok, who kept the ceremonies of my sanctuary when the children of Israel wandered from me, shall draw near to me to minister to me, and they shall stand before me to offer me fat and blood, says the Lord GOD (Ezekiel 44:15).