Catena Aurea

AUGUSTINE. (Tract. xxxviii. 8) His saying, If ye believe not that I am, without adding any thing, proves a great deal. For thus it was that God spoke to Moses, I am that I am. But how do I understand, I am that I am, (Exod. 3) and, If ye believe not that I am? In this way. All excellence, of whatever kind, if it be mutable, cannot be said really to be, for there is no real to be, where there is a not to be. Analyze the idea of mutability, and you will find, was, and will be; contemplate God, and you will find, is, without possibility of a past. In order to be, thou must leave him behind thee. So then, If ye believe not that I am, means in fact, If ye believe not that I am God; this being the condition, on which we shall not die in our sins. God be thanked that He says, If ye believe not, not, If ye understand not; for who could understand this?

ORIGEN. (tom. xix. in Joan.) It is manifest, that he, who dies in his sins, though he say that he believes in Christ, does not really believe. For he who believes in His justice does not do injustice; he who believes in His wisdom, does not act or speak foolishly; in like manner with respect to the other attributes of Christ, you will find that he who does not believe in Christ, dies in his sins: inasmuch as he comes to be the very contrary of what is seen in Christ.