Jeremiah 33:19

PROMISE OF INNUMERABLE DESCENDANTS

"And the word of Jehovah came to Jeremiah, saying, Thus saith Jehovah: If ye can break my covenant of the day, and my covenant of the night, so that there shall not be day and night in their season; then may also my covenant be broken with David my servant, that he should not have a son to reign upon his throne; and with the Levites the priests, my ministers. As the host of heaven cannot be numbered neither the sand of the sea measured; so will I multiply the seed of David my servant, and the Levites that minister unto me."

"The promise of an innumerable posterity once given to the patriarchs, as in Genesis 13:16; 55:5; 22:17, etc., is here applied to the descendants of David and to the number of God's ministers."[10] This means that the numbers of people who will serve the Messiah shall indeed be, "A great multitude which no man could number, out of every nation and all tribes and peoples' and tongues" (Revelation 7:9).

And how are all these "descendants of David?" By virtue of all Christians being "in Christ," they are thereby sons of David and also sons of Abraham (Matthew 1:1; Galatians 3:29). Also, we have already noted how all Christians are priests unto God.