He that hath an ear, let him hear what the Spirit saith unto the churches; He that overcometh shall not be hurt of the second death. He that overcometh - The conqueror who has stood firm in every trial, and vanquished all his adversaries.
Shall not be hurt of the second death - That is, an eternal separation from God and the glory of his power; as what we commonly mean by final perdition. This is another rabbinical mode of speech in very frequent use, and by it they understand the punishment of hell in a future life.
The Epistle to the Church at Pergamos