I Understand that there is disagreement with the idea that Believers in Jesus Christ have but one nature, not two. The fact remains; sin is vanquished but every Believer has difficulty on how to deal with the temptation to sin. The problem is traditional theological understanding which may contradict what God’s Word really says and many do not know how to respond. The fact remains; Believers in Christ have but one nature in Him.
Believers do not have competing natures, and that new nature replaced the old.
I am not at all playing a word game here. I am not attempting to convince myself to be holy, and righteous until I am something I am not. God’s Word teaches us that the power of sin is broken in the life of the Believer because of the death, burial, and resurrection of Jesus Christ. As a result I am to believe this to be so.
Paul does not write that Believers retain sinful flesh at the New Birth. Absolutely we sin, but when we sin it is contrary to our new nature in Christ, not because we have two personalities: one sinful and one righteous.
Believers have made a serious mistake by thinking We have a dual personality: a new and old nature. The idea of dual natures often causes Believers to excuse sin by blaming the old nature, “The Devil made me do it.” No, neither is true for Followers of the Christ ‘choose’ to follow the temptations provided by the Tempter, the Devil. “Happy is the one who endures testing, because when he has proven to be genuine, he will receive the crown of life that God promised to those who love him. Let no one say when he is tempted, “I am tempted by God,” for God cannot be tempted by evil, and he himself tempts no one. But each one is tempted when he is lured and enticed by his own desires. Then when desire conceives, it gives birth to sin, and when sin is full-grown, it gives birth to death. Do not be led astray, my dear brothers and sisters.” James 1:12-16 NET2. Jesus is Lord.