of God, we are certainly not capable of believing anything as of ourselves, since we cannot do this without thinking; but our sufficiency, by which we begin to believe, is of God. Wherefore, as no one is sufficient for himself, for the beginning or the completion of any good work whatever,—and this those brethren of yours, as what you have written intimates, already agree to be true, whence, as well in the beginning as in the carrying out of every good work, our sufficiency is of God,—so no one is