Why is it important for Christians to understand the two natures?
Answered in 1 source
Understanding the two natures helps Christians recognize the struggle between the new spiritual life and the old sinful nature.
The concept of two natures in a believer—flesh and spirit—illustrates the ongoing battle that every Christian faces. As stated in Galatians 5:17, 'The flesh lusteth against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other.' Recognizing this dichotomy is essential for understanding personal sin and reliance on Christ's righteousness rather than self-effort. It affirms the believer's experience of sin while also providing hope and assurance that the new nature desires to honor God. This understanding compels Christians to lean on Christ for sanctification.
Commentary