• Genesis 17:16-19
  And I will bless her and also give you a son by her; then I will bless her, and she shall be a mother of nations; kings of peoples shall be from her.” Then Abraham fell on his face and laughed, and said in his heart, “Shall a child be born to a man who is one hundred years old? And shall Sarah, who is ninety years old, bear a child?” And Abraham said to God, “Oh, that Ishmael might live before You!” Then God said: “No, Sarah your wife shall bear you a son, and you shall call his name Isaac; I will establish My covenant with him for an everlasting covenant, and with his descendants after him.
   

Related Scriptures

• Genesis 26:5
  because Abraham obeyed My voice and kept My charge, My commandments, My statutes, and My laws."
   
• Exodus 12:41
  And it came to pass at the end of the four hundred and thirty years—on that very same day—it came to pass that all the armies of the LORD went out from the land of Egypt.
   
• Hebrews 11:8
  By faith Abraham obeyed when he was called to go out to the place which he would receive as an inheritance. And he went out, not knowing where he was going.
   
• Galatians 3:7
  Therefore know that only those who are of faith are sons of Abraham.
   
• Hebrews 11:39
  And all these, having obtained a good testimony through faith, did not receive the promise,