And I will raise me up a faithful priest, that shall do according to that which is in mine heart and in my mind: and I will build him a sure house; and he shall walk before mine anointed for ever.
I will raise me up a faithful priest. Although not expressed, it is plainly implied that this priest should be in another line, which was fulfilled the person of Zadok, who was eminent for his fidelity both to God and to the king (1 Kings 2:27; 1 Kings 2:35; 1 Chronicles 29:22).
And I will build him a sure house - i:e., give him a numerous posterity (cf. Exodus 1:21; 2 Samuel 7:2) [the Septuagint renders as: oikodomeesoo autoo oikon piston], and ratify the covenant of a perpetual priesthood formerly made with the house of Aaron (Numbers 25:13: cf. Ezekiel 44:15).
And he shall walk before mine Anointed forever, х lipneey (H6440) mªshiychiy (H4899); Septuagint, enoopion (G1799) christou (G5547) mou (G3450)]. The kings of Israel were, from the mode of their consecration, called 'the Lord's anointed.' In this view the permanent elevation to the supreme power, to be conferred by the prophets' unction above that of the high priesthood, must be considered as announced to Eli by the man of God, though it was reserved for David to be informed that this awful dignity should attain an indefinite duration in his family, and should be connected with the final establishment of Israel in a state of peace and happiness. But as the high priest is never said to walk before the kings of Judah or Israel, the phrase must be considered here as = to walking before the Lord-namely, the Messiah (cf. Acts 7:35; 1 Corinthians 10:4; Hebrews 3:3-6, with Malachi 3:1).