How do we know that believers do not have a new nature?

The notion that believers possess a new nature is challenged by the biblical understanding of our standing in Christ. Romans 6:6 states that our old man was crucified with Christ, indicating that the old nature no longer exists for those who believe. The Scriptures emphasize our identity as new creations in the context of reconciliation to God rather than the concept of dual natures. This is further supported by the apostle's teachings, which consistently refer to the believer's struggle not between two natures, but between the flesh and the Holy Spirit (Galatians 5:16-17).

Moreover, references to our being 'partakers of the divine nature' in 2 Peter 1:4 must be understood in context. This term signifies fellowship with God's divine attributes through His promises rather than suggesting a substantive change in a believer's nature. Throughout the New Testament, the consistent usage of terms related to 'old man' and 'new man' underscores the importance of our position in Christ and the active presence of the Holy Spirit as the work of transformation. Thus, we can be confident that Scripture affirms one sinful nature in believers, one that is made new in Christ through the Spirit's transformative work.