The story about the birth of Isaac is more about God’s faithfulness than about Abraham and Sarah’s faith. Years before, God called Abraham to leave everything and everyone and go to a land that God would show them. I will make your name great, give you a land, countless descendants, and make you a blessing, promised God.
Almost a lifetime passed, and for Abraham and Sarah there was no land-they still lived as sojourners. They had hardly been a blessing-just ask Hagar and Ishmael or King Abimelech. And until now, there were no children. It appeared that God’s promises were so much hot air.
But look! Here is little Isaac, the first of many. In Isaac the promises of God begin to come to fruition. It took time, many years. In fact, Abraham and Sarah would not live to see the fulfilment of those promises. But God was, and is, faithful.
God makes promises to us, too. Never to leave us (Joshua 1:5) and to bring us to completion (= sanctify us) at the day of Jesus Christ (Philippians 1:6) are just two that come to mind. It may look like those promises will never be fulfilled, but they are as good as done. Thanks be to God.
Great is your faithfulness, O God. May I trust and not doubt. Amen. — DAB