Moses, however, refused to take the mission upon himself. He said to God, "Thy promise unto Jacob was, 'I will surely bring thee up again out of Egypt.' Thou didst undertake to do it Thyself, and now it is Thy purpose to send me thither. And how, indeed, were it possible for me to accomplish this great matter, to bring the children of Israel up out of Egypt? How could I provide them with food and drink? Many are the women in childbirth among them, many are the pregnant women and the little children. Whence shall I procure dainties for those who have borne babes, whence sweetmeats for the pregnant, and whence tidbits for the little ones? And how may I venture to go among the Egyptian brigands and murderers? for Thou art bidding me to go to mine enemies, to those who lie in wait to take my life. Why should I risk the safety of my person, seeing that I know not whether Israel possesses merits making them worthy of redemption?' I have reckoned up the years with care, and I have found that but two hundred and ten have elapsed since the covenant of the pieces made with Abraham, and at that time Thou didst ordain four hundred years of oppression for his seed."[124] But God overturned all his objections. He spake to Moses, saying: "I will be with thee. Whatever thou desirest I will do, so that the redemption will in very truth be realized through Me, in accordance with My promise to Jacob. The little ones that Israel will carry up out of Egypt I will provide with food for thirty days. This shall prove to thee in what manner I will supply the needs of all. And as I will be at thy side, thou hast no need to fear any man. Respecting thy doubt, whether Israel deserves to be redeemed, this is My answer: they will be permitted to go forth from Egypt on account of the merits they will acquire at this mountain, whereon they will receive the Torah through thee.[125] And thy reckoning of the end is not correct, for the four hundred years of bondage began with the birth of Isaac, not with the going down of Jacob into Egypt. Therefore the appointed end hath come."[126] Persuaded now of God's unalterable resolve to use him as His instrument in the redemption of Israel from Egypt, Moses entreated God to impart to him the knowledge of His Great Name, that he be not confounded if the children of Israel ask for it. God answered, saying: "Thou desirest to know My Name? My Name is according to My acts. When I judge My creatures, I am called Elohim, "judge"; when I rise up to do battle against the sinners, I am Lord Zebaot, "the Lord of hosts"; when I wait with longsuffering patience for the improvement of the sinner, My name is El Shaddai; when I have mercy upon the world, I am Adonai. But unto the children of Israel shalt thou say that I am He that was, that is, and that ever will be, and I am He that is with them in their bondage now, and He that shall be with them in the bondage of the time to come."