6 But it is not as though the word of God has failed. For they are not all Israel who are descended from Israel; 7 nor are they all children because they are Abraham’s descendants, but: “through Isaac your descendants will be named.” 8 That is, it is not the children of the flesh who are children of God, but the children of the promise are regarded as descendants. 9 For this is the word of promise: “At this time I will come, and Sarah shall have a son” (Romans 9).
God’s children are always a result of a promise. He promised Abraham baron Sarah would bear a child as the beginning of his descendants, and in the next chapter here we find another promise to us: 11 For the Scripture says, “Whoever believes in Him will not be disappointed.” 12 For there is no distinction between Jew and Greek. “Whoever” means whoever — whether a physical descendant of Abraham, or a spiritual one.
Because of God’s promise, you and I are no less descendants of Abraham — as is Isaac himself, for we are children of the promise as much he ever was. This means, God had us in mind as much as He ever had Isaac in His mind. This also means, our new birth was as much of a miracle as the birth of Isaac was, coming forth from an old, baron woman by the seed of an old man.
Lord, we thank You for having us in mind, even alongside Isaac. Thank You that we are no less important to You than He was. And thank You for the miracle of our new birth! Yes, thank You, that we too are “children of the promise.” Help us This Day to live like it. Amen.