'Forever' in the Bible

Then the Lord God said, “Behold, the man has become like one of Us, knowing good and evil; and now, he might stretch out his hand, and take also from the tree of life, and eat, and live forever”—

Then the Lord said, “My Spirit shall not strive with man forever, because he also is flesh; nevertheless his days shall be one hundred and twenty years.”

for all the land which you see, I will give it to you and to your descendants forever.

I myself will be surety for him; you may hold me responsible for him. If I do not bring him back to you and set him before you, then let me bear the blame before you forever.

For your servant became surety for the lad to my father, saying, ‘If I do not bring him back to you, then let me bear the blame before my father forever.’