Jeremiah 33:17,18 - Joseph Benson’s Commentary on the Old and New Testaments

For thus saith the Lord, David shall never want a man, &c. It is very evident that the prophecies in these verses were not fulfilled in the Jews after the Babylonish captivity; for, from that time to the coming of Christ, David was without a successor of his family sitting upon the throne of Judah or Israel. Nor have they been fulfilled in them since, for, from the destruction of Jerusalem by the Romans to the present time, they have neither had a king nor a regular priesthood belonging to their nation. There can therefore be no doubt that Jeremiah here foretels the kingdom of the Messiah, and the priesthood, or ministry rather, to be established by him, by which a pure and spiritual oblation should be offered in every place where a church should be formed for him, (see Malachi 1:11,) and not at Jerusalem and in Judea only. “As the Jewish priesthood, in the family of Aaron, is extinct, and hath been exercised neither in Jerusalem nor in any other place for seventeen centuries, it follows,” says Calmet, “that these promises can respect only the eternal priesthood of Jesus Christ, exercised by himself, and by his ministers, in the Christian Church from the beginning, and which shall continue to the end of time.” Nor is it unusual for God in the Old Testament to express promises relating to, and to be fulfilled under, the gospel, by terms proper to the Old Testament. See Isaiah 19:19; Isaiah 56:7; Isaiah 66:23. And as the prophets often describe the Christian worship by representations taken from the temple service, so the apostles prove the rights and privileges belonging to the ministers of the gospel from the prerogatives given to the Jewish priesthood. See Romans 15:16; 1 Corinthians 9:13-14.