The greatest pain of purgatory is the uncertainty of the judgment. Deus absconditus.
518
John viii. Multi crediderunt in eum. Dicebat ergo Jesus: "Si manseritis ... VERE mei discipuli eritis, et VERITAS LIBERABIT VOS." Responderunt: "Semen Abrahæ sumus, et nemini servimus unquam."
There is a great difference between disciples and true disciples. We recognise them by telling them that the truth will make them free; for if they answer that they are free, and that it is in their power to come out of slavery to the devil, they are indeed disciples, but not true disciples.
519
The law has not destroyed nature, but has instructed it; grace has not destroyed the law, but has made it act. Faith received at baptism is the source of the whole life of Christians and of the converted.
520
Grace will always be in the world, and nature also; so that the former is in some sort natural. And thus there will always be Pelagians, and always Catholics, and always strife; because the first birth makes the one, and the grace of the second birth the other.
521
The law imposed what it did not give. Grace gives what is imposes.