'Forever' in the Bible

Therefore the Lord, the God of Israel, says, 'I really did say that your house and your ancestor's house would serve me forever.' But now the Lord says, 'May it never be! For I will honor those who honor me, but those who despise me will be cursed!

You should tell him that I am about to judge his house forever because of the sin that he knew about. For his sons were cursing God, and he did not rebuke them.

Then Samuel said to Saul, "You have made a foolish choice! You have not obeyed the commandment that the Lord your God gave you. Had you done that, the Lord would have established your kingdom over Israel forever!

With regard to the matter that you and I discussed, the Lord is the witness between us forever!"

Jonathan said to David, "Go in peace, for the two of us have sworn together in the name of the Lord saying, 'The Lord will be between me and you and between my descendants and your descendants forever.'"Then David got up and left, while Jonathan went back to the city.