God spoke to Moshe, and said to him, "I am the LORD;
and I appeared to Avraham, to Yitzchak, and to Ya`akov, as El Shaddai; but by my name the LORD I was not known to them.
I have also established my covenant with them, to give them the land of Kana`an, the land of their travels, in which they lived as aliens.
Moreover I have heard the groaning of the children of Yisra'el, whom the Mitzrim keep in bondage, and I have remembered my covenant.
Therefore tell the children of Yisra'el, 'I am the LORD, and I will bring you out from under the burdens of the Mitzrim, and I will rid you out of their bondage, and I will redeem you with an outstretched arm, and with great judgments:
and I will take you to me for a people, and I will be to you a God; and you shall know that I am the LORD your God, who brings you out from under the burdens of the Mitzrim.
I will bring you into the land which I swore to give to Avraham, to Yitzchak, and to Ya`akov; and I will give it to you for a heritage: I am the LORD.'"
Moshe spoke so to the children of Yisra'el, but they didn't listen to Moshe for anguish of spirit, and for cruel bondage.