'Forever' in the Bible

And Yahweh God said, "Look--the man has become as one of us, to know good and evil. {What if} he stretches out his hand and takes also from the tree of life and eats, and lives forever?"

And Yahweh said, "My Spirit shall not abide with humankind forever in that he [is] also flesh. And his days [shall be] one hundred and twenty years."

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

I myself will be surety for him. You may seek him from my hand. If I do not bring him back to you and present him before you, then I will stand guilty before you forever.

For your servant is pledged as surety for the boy by my father, saying, If I do not bring him to you, then I shall be culpable to my father forever.