'Eternal' in the Bible

For our light affliction, which is for the moment, worketh for us more and more exceedingly an eternal weight of glory;

while we look not at the things which are seen, but at the things which are not seen: for the things which are seen are temporal; but the things which are not seen are eternal.

For we know that if the earthly house of our tabernacle be dissolved, we have a building from God, a house not made with hands, eternal, in the heavens.