20. But it is strange in what sense it can be said that "baptism and the Church cannot in any way be separated and detached from one another." For if baptism remains inseparably in him who is baptized, how can it be that he can be separated from the Church, and baptism cannot? But it is clear that baptism does remain inseparably in the baptized person; because into whatever depth of evil, and into whatever fearful whirlpool of sin the baptized person may fall, even to the ruin of apostasy, he yet is not bereft of his baptism. And therefore, if through repentance he returns, it is not given again, because it is judged that he could not have been without it even in his sin. But who can ever doubt that a baptized person can be separated from the Church? For hence all the heresies have proceeded which deceive by the use of Christian terms.