Chapter 24.
56. Petilianus said: "But you will answer that you abide by the same declaration, `He that is once washed needeth not save to wash his feet.' Now the `once' is once that has authority, once that is confirmed by the truth."
57. Augustin 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.