The Shepherd of Hermas

To these then there is repentance, if they be not found to have denied from their hearts. But if one be found to have denied from his heart I do not know whether he can live.

And I do not speak this for these days, in order that one may deny and receive repentance, for it is impossible for him to be saved who shall now deny his Lord. But there seems to be repentance waiting for those who have denied in time past. If then any be about to repent, let him make haste before the tower be finished, otherwise he will be destroyed by the women unto death.