Zadok.

1 Chronicles 6:8
Ahitub was the father of Zadok, Zadok was the father of Ahimaaz,

1 Chronicles 12:28
and Zadok, a valiant young warrior, with 22 commanders from his own family.

1 Chronicles 23:16
The descendants of Gershom: Shebuel was the first.

1 Chronicles 24:3, 31
With the help of Eleazar's descendant Zadok and Ithamar's descendant Ahimelech, David divided them according to the offices of their service. . . .

1 Samuel 2:35
Then I will raise up for Myself a faithful priest. He will do whatever is in My heart and mind. And I will build for him an enduring house, and he will walk before My anointed one for all time.

2 Samuel 8:17
Zadok son of Ahitub and Ahimelech son of Abiathar were priests; Seraiah was the scribe;

2 Samuel 15:24-27, 35, 36
Zadok was also there, and all the Levites with him were carrying the ark of the covenant of God. And they set down the ark of God, and Abiathar offered sacrifices until the people had finished passing out of the city. . . .

2 Samuel 17:15-17
So Hushai told Zadok and Abiathar, the priests, "This is what Ahithophel has advised Absalom and the elders of Israel, and this is what I have advised. . . .

2 Samuel 20:25
Sheva was the scribe; Zadok and Abiathar were priests;

1 Kings 1:8, 26, 34
But Zadok the priest, Benaiah son of Jehoiada, Nathan the prophet, Shimei, Rei, and David's mighty men would not join Adonijah. . . .

1 Kings 2:35
And the king appointed Benaiah son of Jehoiada in Joab's place over the army, and he appointed Zadok the priest in Abiathar's place.

1 Kings 4:4
Benaiah son of Jehoiada was in charge of the army; Zadok and Abiathar were priests;

Ezekiel 44:15
But the Levitical priests, who are descended from Zadok and who kept charge of My sanctuary when the Israelites went astray from Me, are to approach Me to minister before Me. They will stand before Me to offer Me fat and blood, declares the Lord GOD.