(13) What is his name?--In Egypt, and wherever polytheism prevailed, every god had, as a matter of course, a name. Among the Israelites hitherto God had been known only by titles, as El or Elohim, "the Lofty One; "Shaddai," the Powerful; "Jahveh, or Jehovah, "the Existent." These titles were used with some perception of their meaning; no one of them had as yet passed into a proper name. Moses, imagining that the people might have become so far Egyptianised as to be no longer content with this state of things, asks God by what name he shall speak of Him to them. Who shall he say has appeared to him?

Verse 13. - What is his name? It is not at all clear why Moses should suppose that the Israelites would ask him this question, nor does it even appear that they did ask it. Perhaps, however, he thought that, as the Egyptians used the word "god," generically, and had a special name for each particular god - as Ammon, Phthah, Ra, Mentu, Her, Osiris, and the like - when he told his people of "the God of their fathers," they would conclude that he, too, had a proper name, and would wish to know it. The Egyptians set much store by the names of their gods, which in every ease had a meaning. Ammen was "the concealed (god)," Phthah, "the revealer," Ra,"the swift," etc. Hitherto Israel's God had had no name that could be called a proper name more than any other. He had been known as "El," "The High;" "Shad-dai," "The Strong;" and "Jehovah," "The Existent;" but these terms had all been felt to be descriptive epithets, and none of them had passed as yet into a proper name. What was done at this time, by the authority of God himself, was to select from among the epithets one to be distinctly a proper name, and at the same time to explain its true meaning as something more than "The Existent" - as really "The Alone Existent" - the source of all existence. Henceforth this name, which had previously been but little used and perhaps less understood, predominated over every other, was cherished by the Jews themselves as a sacred treasure, and recognised by those around them as the proper appellation of the one and only God whom the Israelites worshipped. It is found in this sense on the Moabite stone ('Records of the Past,' vol. 11, p. 166), in the fragments of Philo-Byblius, and elsewhere.

3:11-15 Formerly Moses thought himself able to deliver Israel, and set himself to the work too hastily. Now, when the fittest person on earth for it, he knows his own weakness. This was the effect of more knowledge of God and of himself. Formerly, self-confidence mingled with strong faith and great zeal, now sinful distrust of God crept in under the garb of humility; so defective are the strongest graces and the best duties of the most eminent saints. But all objections are answered in, Certainly I will be with thee. That is enough. Two names God would now be known by. A name that denotes what he is in himself, I AM THAT I AM. This explains his name Jehovah, and signifies, 1. That he is self-existent: he has his being of himself. 2. That he is eternal and unchangeable, and always the same, yesterday, to-day, and for ever. 3. That he is incomprehensible; we cannot by searching find him out: this name checks all bold and curious inquiries concerning God. 4. That he is faithful and true to all his promises, unchangeable in his word as well as in his nature; let Israel know this, I AM hath sent me unto you. I am, and there is none else besides me. All else have their being from God, and are wholly dependent upon him. Also, here is a name that denotes what God is to his people. The Lord God of your fathers sent me unto you. Moses must revive among them the religion of their fathers, which was almost lost; and then they might expect the speedy performance of the promises made unto their fathers.And Moses said unto God,.... Having received full satisfaction to his objection, taken from his own unfitness for such a service, and willing to have his way quite clear unto him, and his commission appear firm and valid to his people, he proceeds to observe another difficulty that might possibly arise:

when I come unto the children of Israel: out of Midian into Egypt:

and shall say unto them, the God of your fathers hath sent me unto you; with a message to them to receive him as his ambassador and their deliverer:

and they shall say unto me, what is his name? a question it was probable they would ask, not through ignorance, since in their distress they had called upon the name of the Lord, and cried unto him for help and deliverance; but either to try Moses, and what knowledge he had of God: or there being many names by which he had made himself known; and especially was wont to make use of a new name or title when he made a new appearance, or any eminent discovery of himself, they might be desirous of knowing what was the present name he took:

what shall I say unto them? what name shall I make mention of?