'Forever' in the Bible

Hannah did not go up because she had told her husband, "As soon as the child is weaned, I'll take him to appear in the LORD's presence and remain there forever."

“Therefore, this is the declaration of the Lord, the God of Israel:‘Although I saidyour family and your ancestral housewould walk before Me forever,the Lord now says, “No longer!”I will honor those who honor Me,but those who despise Me will be disgraced.

Distress will settle down to live in your household, and despite all the good that I do for Israel, there will never be an old man in your family forever, and you will never again have an old man in my house.

And I'll raise up for myself a faithful priest who will do according to what is in my heart and according to my desire. I'll build for him an enduring house and he will walk before my anointed one forever.

I told him that I am going to judge his family forever because of the iniquity he knows about: his sons are defiling the sanctuary, and he has not stopped them.

Therefore I've sworn concerning Eli's family that the iniquity of his family is not to be atoned for by sacrifice or offering forever."

Then Samuel told Saul, "You have acted foolishly. You haven't obeyed the commandment of the LORD your God, which he commanded you. For then the LORD would have established your kingdom over Israel forever,

And don't stop showing your gracious love to my family forever, not even when the LORD eliminates each of David's enemies from the surface of the earth."

As for the matter you and I have spoken about, the Lord will be a witness between you and me forever.”

Jonathan then said to David, “Go in the assurance the two of us pledged in the name of the Lord when we said: The Lord will be a witness between you and me and between my offspring and your offspring forever.” Then David left, and Jonathan went into the city.

So Achish trusted David, thinking, “Since he has made himself detestable to his people Israel, he will be my servant forever.”