The God of Astounding Faithfulness (Part 1 of 2)

Despite all the improbability of an elderly and childless couple having a son, God keeps his promise and gives Isaac to Abraham and Sarah. His faithfulness to the promise has not been undermined by the sin and failure of his servants. In addition to this, God shows his faithfulness to Hagar and Ishmael. God is entirely faithful to his promises—more faithful than we can imagine or comprehend.