Ambrose of Milan

Now they who have attempted to set forth these things in order have laboured by themselves, and have not succeeded in what they attempted. For without the assistance of man come the gifts and the grace of God, which, when it is infused, is wont so to flow, that the genius of the writer is not exhausted, but ever abounding. He well says therefore, Of things which have been fully accomplished among us, or which abound among us. For that which abounds is lacking to none, and no one doubts about that which is fulfilled, since the accomplishment builds up our faith, and the end manifests it.