'Forever' in the Bible

I'm the living bread that came down from heaven. If anyone eats this bread, he'll live forever. And the bread I will give for the life of the world is my flesh."

This is the bread that came down from heaven, not the kind that your ancestors ate. They died, but the one who eats this bread will live forever."

The slave does not remain in the household forever, but the son does remain forever.

Then the crowd answered him, "We have learned from the Law that the Messiah remains forever. So how can you say that the Son of Man must be lifted up? Who is this Son of Man?"