When Abram was ninety-nine years old, the Lord appeared to Abram and said to him, "I am El Shaddai. Walk in My ways and be blameless. I will establish My covenant between Me and you, and I will make you exceedingly numerous."
Abram threw himself on his face; and God spoke to him further, "As for Me, this is My covenant with you: You shall be the father of a multitude of nations. And you shall no longer be called Abram, but your name shall be Abraham, for I make you the father of a multitude of nations. I will make you exceedingly fertile, and make nations of you; and kings shall come forth from you. I will maintain My covenant between Me and you, and your offspring to come, as an everlasting covenant throughout the ages, to be God to you and to your offspring to come. I assign the land you sojourn in to you and your offspring to come, all the land of Canaan, as an everlasting holding. I will be their God."
From Genesis 17 in Tanakh: A New Translation of the Holy Scriptures (Philadelphia: Jewish Publication Society, 1985)