What does it mean to be a child of promise according to scripture?

In Galatians 4, Paul emphasizes that believers, like Isaac, are children of promise. This signifies that our acceptance before God and our inheritance as His children come not from our own striving or works but from God's sovereign choice and His promises. Just as Isaac was born by God's miraculous intervention rather than through human effort, so too are we made children of God through the Spirit, who applies the benefits of Christ's work to our lives. This assurance encourages Christians to rest in the grace of God that calls them to live out their faith joyfully, trusting in His faithfulness.