Both. The born again of God have a new nature as Adam was created with, but also the gospel which is the power of God living inside of us.
I'm not sure it is possible to hold both positions simultaneously. Either Christ is the perfection in us, or we are ourselves perfect souls living in mortal bodies. When we are "Born Again" we do receive a New Nature. But as much as it is created to be like Christ it is not perfect as Christ is.
For me, a "New Nature" simply means that our souls have received fresh spiritual life from Christ--not that it is an entirely new, immortal entity living inside a mortal body. A "Nature" is a tendency. Our souls remain fallen souls, but legally, we've been liberated from our "fallenness."
However, we've not yet been made perfect. We've only been given access to the perfect Christ, complete with all of His fruit and virtues. Displaying Christ enables us to display *his perfection,* and not yet our own. This is our "New Nature"--not perfection, but new regular tendencies to obey God and to display His virtues.
The Apostle John is calling sin breaking the "law."
1 John 3:4-5
4 Whoever commits sin also commits lawlessness, and sin is lawlessness. 5 And you know that He was manifested to take away our sins, and in Him there is no sin.
By "taking away our sins" John is meaning that *legally* our sins are erased--not that we have in any way become perfect yet.
Lawlessness was put in Adam's human nature by Satan to corrupt mankind. Thus we see Cain murdering his brother. It was in his nature.
Jesus came to take away lawlessness back out of our nature, and to dwell within us, empowering us. By His crucifixion and resurrection , Jesus took back what had been lost to Satan. See the result:
1 John 3:8-9
8 He who sins is of the devil, for the devil has sinned from the beginning. For this purpose the Son of God was manifested, that He might destroy the works of the devil. 9 Whoever has been born of God does not sin, for His seed remains in him; and he cannot sin, because he has been born of God.
This is a misinterpretation of what John was saying. It is easily misunderstood because it is saying, in an abbreviated way, that we do not pursue Sin now that Christ's spiritual life has regenerated our soul. Our soul is not yet perfect, but we have access to the Spirit of Christ such that we can engage in his actual virtues, including love and compassion.
The losses given up due to Satan have not yet been fully restored. They've been legally restored, but not actually restored as it is to be fulfilled in the resurrection.
"Lawlessness" has not yet been completely expunged from our Nature. Our Nature is still a "Sin Nature." We gravitate towards Sin, but are able to resist it. Not only so, but we can also draw upon Christ regularly, indicating it is indeed a "New Nature" that we have received.
This remains a spiritual conflict, because Sin is still "trending" in our life, while at the same time we can choose to do right. More importantly, we have received from Christ a new ability to live by Christ all the time, indicating it is indeed a "New Nature.'
It is not sinless, but it has regular access to Christ through the Spirit such that we can demonstrate Christian virtues 24-7, instead of living for Sin one day and living for Christ another day. The idea is not to have temporary victories, but to experience victory all the time, subordinating the Sin Nature to the New Nature on a regular basis.
There are two types of sin. Sins unto death, and sins not unto death. John is addressing sins unto death in this chapter of the Bible. The context is verse 4 above. This is also why the New Covenant is putting the laws of God in our heart which is our conscience. This is also why Paul writes the last verse of Romans 3:31 "Do we then make void the law through faith?
To me, "sins unto death" are not a reference to becoming Born Again or not. They have to do with sins we can commit, the consequences from which we cannot be protected. From such we may pray and pray and still not get an answer from God, just as King David could not pray and find relief from his child's certain death. So the "Sin unto Death" here is irrelevant from my point of view. We should avoid, with great earnestness, the more "dangerous" sins. It may not mean "Hell," but it can in fact mean great loss!
Certainly not! On the contrary, we establish the law." With our newly cleansed nature and filled with the Spirit of Christ we are naturally righteous.
In context Paul was talking about the complementary aspects of the Law and the Gospel of Grace. Both established righteousness as the rule for Man, since we were all created in the image of God. Both the Law and the Gospel established that reality.
The change from the Law of Moses to the Covenant of Grace was an intended and natural progression, rather than a rebuttal against living by the rules of the Law. Once Christ died for sin, animal sacrifices were no longer needed. But living by the moral guidance of the Spirit of God did not change at all. Again, this has nothing to do with our adopting perfect natures through Christ!
1 John 3:7
7 Little children, let no one deceive you. He who practices righteousness is righteous, just as He is righteous. 8 He who sins is of the devil, for the devil has sinned from the beginning.
We agree on our need to be righteous, that we are not "Sinners" in the sense we remain "Sinful" and do not reflect the introduction of Christ's renewing life into our lives. We are not only forgiven, but we are also Sanctified. That is, we are called into covenant relationship with God such that we can live in relationship with God through His Word and display His virtues through our obedience.
Romans 6:5-7
5 For if we have been united together in the likeness of His death, certainly we also shall be in the likeness of His resurrection, 6 knowing this, that our old man was crucified with Him, that the body of sin might be done away with, that we should no longer be slaves of sin. 7 For he who has died has been freed from sin.
This has to do with legal resolutions, and not with our supposed metamorphosis from being a Sinner to being Sinless.
We are now sinless of lawlessness, but not perfect.
This is, for me, a contradiction, introducing confusion. I'm sorry--I've had the same arguments myself, but this is how I've resolved it. I used to believe we had a sinless new soul inside of our sinful bodies. To me, that language no longer works.
Adding the mature fruit of the Spirit to our sinlessness/righteousness makes us perfect/holy. Revelation 22:11 shows we must be one or both. Jesus is coming within this decade. He is coming for a Bride without Spot or Wrinkle. Abiding in Jesus is the answer for Him to Finish us to perfection as His Bride.
I would phrase it differently. To be holy is to conform our lives to the holiness of God. We simply adopt Christ as our life and forsake the selfishness of human carnality. We avoid wants, lusts, and anything independent of God.
Fruit does not make us holy, as such, but is only the result of our choice to conform to God's holiness. If we choose to live in conformity with His will, we will produce His fruit of love and kindness.