1 Samuel 2:30

I said indeed. By thus acting Eli became an accomplice in the irreligion of his sons, and God therefore revokes his grant of a perpetual priesthood. The promise had been made to Aaron's family as a whole ( Exodus 29:9 ), and had then been renewed to the house of Eleazar ( Numbers 25:13 ). But the house of Ithamar was now in the ascendant, probably owing to Eli's own ability, who during the anarchical times of the Judges had won for himself, first, the civil power, and then, upon some fitting opportunity, the high priesthood also, though I suppose the heads of the houses of Eleazar and Ithamar were always persons of great importance, and high priests in a certain sense. Eli had now the priority, and had he and his family proved worthy, the possession of this high station might have been confirmed to them. Like Saul in the kingdom, they proved unworthy of it, and so they lost it forever. Their names, as we have seen above, do not even occur in the genealogies.

I said .... but now Jehovah saith. Can then a promise of God be withdrawn? Yes, assuredly. Not from mankind as a whole, nor from the Church as a whole, but from each particular nation, or Church, or individual. To each separate person God's promises are conditional, and human action everywhere is a coworker with the Divine volition, though only within a limited sphere, and so as that the Divine purposes must finally be accomplished. Eli then and his sons may suffer forfeit of the promise by not fulfilling the obligations which, whether expressed or implied, are an essential condition of every promise made by God to man. But the high priesthood will continue, and will perform its allotted task of preparing for the priesthood of Christ. "Them that honour me I will honour," states one of these conditions essential on man's part to secure the fulfilment of God's promises.