On Baptism, Against the Donatists.
Chapter 19.—32. Felix of Bagai said: As when the blind leads the blind, both fall into the ditch,
Chapter 37.—71. Libosus of Vaga said: The Lord says in the gospel, ‘I am the truth ’
Chapter 10.—18. Likewise another Felix of Marazana said: There is one faith, one baptism,
Chapter 14.—26. Aymnius of Ausuaga
Chapter 26.—50. Also another Lucius of Membresa said: It is written, ‘God heareth not sinners.’
Chapter 19.—36. Donatus of Cibaliana669 [Cibaliana (Cybaliana), most probably in ecclesiastical province of Africa Proconsularis.] Donatus, as contemporary bishop, occurs in Cypr. Epp. lvii. bis. lxx. bis. said: "I acknowledge one Church, and one baptism that appertains thereto. If there is any one who says that the grace of baptism exists among heretics, he must first show and prove that the Church exists with them."670 Conc. Carth. sec. 55.
37. To him we answer: If you say that the grace of baptism is identical with baptism, then it exists among heretics; but if baptism is the sacrament or outward sign of grace, while the grace itself is the abolition of sins, then the grace of baptism does not exist with heretics. But so there is one baptism and one Church, just as there is one faith. As therefore the good and bad, not having one hope, can yet have one baptism, so those who have not one common Church can have one common baptism.