'Eternal' in the Bible

For our momentary, light suffering is producing for us an eternal weight of glory far beyond all comparison

because we are not looking at what can be seen but at what cannot be seen. For what can be seen is temporary, but what cannot be seen is eternal.

For we know that if our earthly house, the tent we live in, is dismantled, we have a building from God, a house not built by human hands, that is eternal in the heavens.