Patristics

Without the Spirit of God

 

The flesh, when destitute of the Spirit of God, is dead, not having life, and cannot possess the kingdom of God: But where the Spirit of the Father is, there is a living man; [there is] the flesh possessed by the Spirit, forgetful indeed of what belongs to it, and adopting the quality of the Spirit, being made conformable to the Word of God. … As therefore he says, when we were destitute of the celestial Spirit, we walked in former times in the oldness of the flesh, not obeying God; so now let us, receiving the Spirit, walk in newness of life, obeying God. Therefore, without the Spirit of God we cannot be saved.

St Irenaeus of Lyons

Against Heresies V, 9, 3; ANF I, p. 535.