Millennial Priesthood Isaiah 2:03

For out of Zion will go forth the law and the Word of the Lord from Jerusalem....Isaiah 2:3

During the first 1000 years of Christ's reign (and beyond), Israel will be the head nation and will be responsible for flooding the earth with the knowledge of Christ.

Those who survive the great tribulation and the judgment of the nations will know who the King of Kings and Lord of Lords is--but they will be giving birth to children who did not have first hand knowledge (as they will have) of these things. They will be responsible for teaching their children, and the teachings they will be passing on to their children will be coming out of Jerusalem.

Isaiah, Jeremiah, Ezekiel and Zechariah all tell us that the millennial worship of the Lord will include Holy Days, Sabbaths and Sacrifices (Isaiah 56:7, Jeremiah 33:17-18, 66:22-23, Ezekiel 40:38, Zechariah 14:11).

The sons of Zadok will be singled out and honored to serve as priests of the Lord during this time (Levites of other lineage will serve as ministers but will not come close to the Lord by offering sacrifices), but exactly who are the sons of Zadok, and why are they chosen to be honored so?

Zadok was descended from Phinehas who was the son of Eleazar the son of Aaron. (Exodus 6:23-25, 1 Chronicles 24:3, 1 Chronicles 6:50-53).

Both of these men (both Phinehas and Zadok) distinguished themselves greatly in the eyes of the Lord--and God doesn't overlook or forget about those who love and obey him--ever .

Just as David was promised that he would never lack a man to sit on his throne, because Phinehas dared to stand for the Lord when no one else would (Numbers 25:6-9), he was promised an everlasting priesthood (the King James Bible is the only version that I know of that is consistent in translating the "everlastings." They are found throughout the Word of God in reference to the millenium and beyond--see "Bible Versions" in the navigation bar)

Among the descendants of Phinehas, the sons of Zadok were singled out to be the recipients of the everlasting priesthood and serve in the millenial temple (Zadok was a priest during the reign of David who distinguished himself by staying true to the Lord while others of the priestly line went astray ( Ezekiel 12-15, 1 Chronicles 24:3).