That he might fulfil the word of the L RD - We need not understand this as stating that the fulfillment of the old prophecy was Solomon's motive, or even one of his motives. The reference is to the overruling providence of God, which thus brought about the fulfillment of the prophecy. (Compare Matthew 1:22; Matthew 2:15; Matthew 27:35, etc.) The deposition of Abiathar involved the rejection of the house of Ithamar 1 Chronicles 24:3, to which Eli belonged, and the reestablishment of the high priesthood in the line of Eleazar.

So Solomon thrust out Abiathar - This was for having taken part before with Adonijah, but by it a remarkable prophecy was fulfilled; see 1 Samuel 2:13-35 (note), and the notes there. God had told Eli that the priesthood should depart from his house; Abiathar was the last of the descendants of Ithamar, of which family was Eli the high priest. Zadok, who was made priest in the stead of Abiathar, was of the family of Eliezer; and by this change the priesthood reverted to its ancient channel. Abiathar deserved this degradation; he supported Adonijah in his unnatural assumption of the royal dignity, even during the life of his father. This was the head and front of his offending.

So Solomon thrust out Abiathar from being priest unto the Lord,.... He deposed him from his office of high priest, otherwise I suppose he might officiate as a common priest, at least in some of the branches of it; this was done by his own authority as a king, and not as a prophet, as Bellarmine vainly distinguishes; and not by the authority of the college of the, priests, at the instance of Solomon, as Fortunatus Schacchus says (d) for which there is no foundation:

that he might fulfil the word of the Lord; which he might do intentionally, having knowledge of it, or however eventually:

which he spake concerning the house of Eli in Shiloh; of which house Abiathar was, and which, according to that prophecy, was to be demolished, and the priesthood translated from it, which was in the line of lthamar, to another house, in the line of Eleazar; the word of the Lord, referred to, is in 1 Samuel 2:31.

(d) Elaeochrism. Myrothec. l. 3. c. 50. col. 1069.

The banishment of Abiathar to his own private possession involved his deposition from the priesthood. And, as the historian adds, thus was the word of the Lord concerning the house of Eli fulfilled (1 Samuel 2:30-33). למלּא corresponds to the New Testament ἵνα πληρωθῇ. For further remarks on this prophecy and its fulfilment, see at 1 Samuel 2:30.

(Note: Nothing is related concerning the subsequent fate of Abiathar, since the death of a high priest who had been deprived of his office was a matter of no importance to the history of the kingdom of God. At any rate, he would not survive his deposition very long, as he was certainly eighty years old already (see Comm. on Sam. p. 267). - The inference which Ewald (Gesch. iii. pp. 269,270) draws from 1 Samuel 2:31-36 as to the manner of his death, namely, that he fell by the sword, is one of the numerous fictions founded upon naturalistic assumptions with which this scholar has ornamented the biblical history.)

Thus was the high-priesthood of the house of Eli extinguished, and henceforth this dignity passed through Zadok into the sole possession of the line of Eleazar.

So Solomon thrust out Abiathar from being priest unto the LORD; that he might fulfil the word of the LORD, which he spake concerning the house of Eli in Shiloh.

2:27 Which he spake - Concerning the translation of the priesthood from the house of Eli, and of Ithamar, to that of Eleazar: which being threatened eighty years ago, is now executed. So divine vengeance, though sometimes it be slow, is always sure.

2:26-34 Solomon's words to Abiathar, and his silence, imply that some recent conspiracies had been entered into. Those that show kindness to God's people shall have it remembered to their advantage. For this reason Solomon spares Abiathar's life, but dismisses him from his offices. In case of such sins as the blood of beasts would atone for, the altar was a refuge, but not in Joab's case. Solomon looks upward to God as the Author of peace, and forward to eternity as the perfection of it. The Lord of peace himself gives us that peace which is everlasting.