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.
Related Commentaries of 1 Kings 2:27
1 Kings 2:27
27 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.