What does the Bible say about having two natures?

According to Scripture, particularly in 1 John 3, every believer who is born of God has a holy nature that is incapable of sinning because it is derived from God's own seed. This holy nature signifies that one cannot pursue sin or act contrary to God’s righteousness. At the same time, believers also possess a sinful nature, which is the result of the flesh, full of sin and in need of redemption. This duality reflects the ongoing struggle within believers, highlighted in Romans 7, where Paul articulates the conflict between the desire to do good—rooted in the holy nature—and the sinful actions arising from the flesh.