Therefore, the LORD, the God of Israel, declares: ‘I did indeed say that your house and the house of your father would walk before Me forever. But now the LORD declares: Far be it from Me! For I will honor those who honor Me, but those who despise Me will be disdained.
Eli reproved his sons too gently, and did not threaten them as he should, and therefore God sent a prophet to him to reprove him sharply, and to threaten him, because, by his indulgence of them, he had strengthened their hands in their wickedness.
Commenting on 1 Samuel 2:27-36
Behold, the days come,.... Or, are coming (g); and will quickly come, in a very little time the things, after threatened, began to take place, even in the days of Eli's sons, and the whole was accomplished in about eighty years after: that I will cut off thine arm, and the arm of thy father's house: that is, the strength of him and them, as...
Wherefore the LORD God of Israel saith, I said indeed [that] thy house, and the house of thy father, should walk before me for ever: but now the LORD saith, Be it far from me; for them that honour me I will honour, and they that despise me shall be lightly esteemed. (u) God's promises are only effective to those he gives faith to fear and obey him.