God Has Given You A New Name - Genesis 17-18.

17 When Abram was ninety-nine years old, the Lord appeared to him and said, “I am God Almighty[a]; walk before me faithfully and be blameless. 2 Then I will make my covenant between me and you and will greatly increase your numbers.”

3 Abram fell facedown, and God said to him, 4 “As for me, this is my covenant with you: You will be the father of many nations. 5 No longer will you be called Abram[b]; your name will be Abraham,[c] for I have made you a father of many nations.

15 God also said to Abraham, “As for Sarai your wife, you are no longer to call her Sarai; her name will be Sarah. 16 I will bless her and will surely give you a son by her. I will bless her so that she will be the mother of nations; kings of peoples will come from her.”