The gospel, which is the wisdom of upbringing, does not get involved in an intellectual or verbal quarrel with a person in order to prove to him that it is so; the gospel knows very well that this is not the way things are done, that a human being does not first understand that what it says is so and then decide to obey unconditionally, but the reverse, that only by unconditionally obeying does a human being come to understand that what the gospel says is so.
Another handy tautology of faith.
