Answer to Letters of Petilian, Bishop of Cirta

⁵⁶ Petilianus said: "But you will answer that you abide by the same declaration, ‘He that is once washed needs not save to wash his feet.' Now the ‘once' is once that has authority, once that is confirmed by the truth."

57. Augustine answered: Baptism in the name of the Father and of the Son and of the Holy Ghost has Christ for its authority, not any man, whoever he may be; and Christ is the truth, not any man.