XVIII. (90) Therefore it is a necessary addition which is subjoined, “Abraham believed in God,”{37}{#ge 15:6.} to the praise of him who did thus believe. And yet, perhaps, some one may say, “Do you judge this worthy of praise? who would not give his attention to God when saying or promising anything, even if he were the most wicked and impious of all men?” (91) To whom we will reply, “Do not, do not, my good man, without further inquiry, either rob the wise man of his due praise, or attribute to unworthy persons that most perfect of the virtues, faith; and do not blame our opinion on this point; (92) for if you are willing to enter upon a deeper investigation into this subject, and are not content with examining it superficially, you will then see clearly, that without the assistance or addition of something else, it is not easy to believe in God on account of that connection with mortality in which we are involved, which compels us to put some trust in money, and glory, and authority, and friends, and health, and vigour of body, and in numerous other things; (93) but to wash off all these extraneous things, to disbelieve in creation, which is, in all respects, untrustworthy as far as regards itself, and to believe in the only true and faithful God, is the work of a great and heavenly mind, which is no longer allured or influenced by any of the circumstances usually affecting human life.

XIX. (94) And it is well added in the scripture, “And it was counted to him for righteousness:” for nothing is so righteous as to have an unalloyed and entire belief in the only God. (95) But this, although both just and consistent with reason, was considered an incredible thing on account of the incredulity of the generality of men, whom the holy scripture condemns, saying, that “to anchor firmly and unchangeably on the only living God, is a thing to be admired among men, who have no possession of true unmingled good, but is not to be wondered at if truth guide the judgment; but it is the especial attribute of justice.