How do we know that we are children of the promise?
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We know we are children of the promise by being born again through the Spirit, like Isaac, who represents those redeemed by grace.
In Galatians 4, the Apostle Paul explains that being a child of the promise means being born of the Spirit, as Isaac was born to Sarah. This spiritual birth signifies a transformation from bondage to freedom, where one acknowledges their state as a guilty sinner and relies on Christ's sacrifice. Believers are assured of their status as children of God through the work of the Holy Spirit in their lives, confirming their identity as heirs of the heavenly Jerusalem. Romans 8:16 affirms this truth by stating that the Spirit itself bears witness with our spirit that we are the children of God.
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