1 John 3:4-24 deals with the two natures of the believer in action. 1 John 3:9 says, “Whosoever is born of God doth not commit sin; for his seed remaineth in him: and he cannot sin, because he is born of God.” Commit means, in this context, “to do some act, or make some declaration, which may bind the person in honor, good faith, or consistency, to pursue a certain course of conduct, or to adhere to the tenor of that declaration.” The passage does not say, “doth not sin.” It says, “doth not commit sin.” The new nature cannot sin, but the old nature can. Dr. J. Vernon McGee thoroughly explains this matter in his studies on 1 John.
Can psychology deal with the old nature? What about all the books written and sermons preached to deal with the old nature? The following short audio of teaching by Dr. J. Vernon McGee, in this short 3 minute 13 second audio, addresses these questions and more:
Jerald Finney, a Christian Lawyer, having received this ministry in the Lord, explains how a church in America can remain under the Lord Jesus Christ and Him only. "As every man hath received the gift, even so minister the same one to another, as good stewards of the manifold grace of God. If any man speak, let him speak as the oracles of God; if any man minister, let him do it as of the ability which God giveth: that God in all things may be glorified through Jesus Christ, to whom be praise and dominion for ever and ever. Amen" (1 Peter 4:10-11; See also, Ephesians 4::1-16 and 1 Corinthians 12:1-25). "Take heed to the ministry which thou hast received in the Lord, that thou fulfil it" (Colossians 4:17). "And hath put all things under his feet, and gave him to be the head over all things to the church" (Ephesians 1.22; See also, e.g. Colossians 1:18).