'Eternal' in the Bible

And the angels who did not keep to their kingdom but went out from the place which was theirs, he has put in eternal chains and in dark night till the great day of the judging.

Even as Sodom and Gomorrah, and the towns near them, having like these, given themselves up to unclean desires and gone after strange flesh, have been made an example, undergoing the punishment of eternal fire.

Keep yourselves in the love of God, looking for life eternal through the mercy of our Lord Jesus Christ.