How do we know the doctrine of the two natures is true?
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The doctrine of the two natures is rooted in Scripture, affirming that believers possess both the old sinful nature and the new nature born of God's Spirit (Romans 7:22-23).
The reality of the two natures in a believer is firmly supported by Scripture. In Romans 7:22-23, Paul articulates this struggle: he delights in God's law in his inner being but sees another law at work in his members waging war against this delight. This dichotomy highlights that every believer experiences a duality—one nature birthed from Adam, characterized by sin and flesh, and the other birthed from the Spirit, characterized by righteousness and life. This is not meant as an excuse for sin but rather as an explanation of the ongoing struggle that all Christians face in their journey of faith.
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