1 Samuel 2:35

And I will raise me up a faithful priest— i.e. Zadok, as it is generally supposed, who was anointed in the room of Abiathar, the last descendant of Eli in the pontificate. See 1 Kings 2:27; 1 Kings 2:35. I will build him a sure house: i.e. "I will give him a numerous posterity, and I will renew with him the promise which I made to Phinehas the son of Eleazar:" a prediction which was fully justified by the event. See Ezekiel 40:16 and Josephus Antiquit. lib. 10: cap. 4. He shall walk before mine anointed: i.e. "Zadok and his descendants shall continually perform the office of high-priest: before that king whom God shall anoint, and before his successors." Procopius Gazaeus well remarks, that though, according to the history, this is meant of, and may properly be applied to Zadok, who was put into the priesthood by Solomon; yet it belongs to none in its sublimest sense, but to our Lord Jesus Christ, the anointed of the Father, and the faithful high-priest, who offered up the great sacrifice of himself for the sins of mankind.