I don't believe that is biblically substantiated. We have not yet been made sinless, therefore we still need to go by the biblical standard as our measure of what is right and good.
Didn't Jesus say to people that they have been forgiven, and to go and sin no more? Are you saying he didn't actually expect they could? Like saying, go and levitate yourself, or something he knew they could not do? Why would he say that, if he didn't think they could?
We know what sin is by the law (Romans 3:20 b), and sin is transgression of the Torah (1John 3:4).
I think you have it upside down. Plus, you are missing the surrounding verses with these citations which will affirm what I am saying. We don't sin because we break the rules. Breaking the rules is the result of sin, or falling short of the mark to begin with. If you were not out of balance to begin with, you would not fall over. It's not the falling over that makes you unbalanced, or out of true.
With that in mind, we need to add back in Ro. 3:20 a, to preface b.
Therefore no one will be declared righteous in God’s sight by the works of the law; rather, through the law we become conscious of our sin.
In other words, the law is what you measure your actions against your standing or falling. It's not by performing it, you are made righteous. Because even if you follow the letter of the law, yet on the inside you are unbalanced, out of true, even your "good works" are stained by sin. They are as "filthy rags", because they are not coming from a place of love and truth. They are not coming from God as the source.
Therefore, the next verses conclude,
21 But now apart from the law the righteousness of God has been made known, to which the Law and the Prophets testify. 22 This righteousness is given through faith in Jesus Christ to all who believe.
In other words, it is the transformation of your person, becoming filled with Divine Love, that your actions do not sin. "Love works no ill," Romans 13:10. Meaning, if you love, you will not be capable of sin. "Go and sin no more," is basically say, "walk in love, and you will sin no more".
Now 1 John 3:4, you cited. Let's read that in context:
Everyone who sins breaks the law; in fact, sin is lawlessness.
5 But you know that he appeared so that he might take away our sins. And in him is no sin.
6 No one who lives in him keeps on sinning. No one who continues to sin has either seen him or known him.
As you can see, what I have said is very much biblically supported. "No one who lives in him keeps on sinning". Why? Because Christ in them is Divine Love. and "love works no ill". That's why.
Also, the greatest commandment is to love God with all our heart, soul, and strength- how do we know how to love him? From what I see, it is by walking in his ways. If you love me, keep my commandments. We can't just decide to love him our own way, he is a holy God, and he has laid out the way in which we should walk.
Our own being and actions do not fulfill the Torah unless we do as he says.
Again, you are coming at this backwards, or upside down. That greatest commandment affirms exactly what I am saying about God within as the source of all external actions, as opposed to us in our egos trying to be "good", with human effort, trying to conform to rules viewed as external to us.
The first commandment is to love God with your entire being. The reason for this is because it makes us filled with God's Love. Without that Love, we are not capable of seeing the other through the eyes of that Love. The second commandment to love your neighbor as yourself is dependent upon that. If we are self absorbed, we are not able to love another as an extension of ourselves. All our actions are dependent upon connection with that Source of Divine Love, which is God.
You don't connect to that by obeying a bunch of rules, but your heart is full of jeouslies, desires, resentments, angers, etc. You can follow those to a T, yet still have the heart impure. If you want to truly love your neighbor as yourself, you have to get the ego out of the way trying to gain for itself. And that is why the first commandment is to love God, not with your works, but with your mind, your heart, your intention, and everything in full surrender.
Nothing that comes from that, originates in the ego. It comes by setting the ego aside as the primary focus, even when it sneakily hides behind supposedly righteous works. And when that happens, there is no need to follow the rule book or the law to "obey God's will". You live it instead. You
are it. That is the point of all of it, and what I believe that Jesus intended to teach, but few could understand, being conditioned to think it's something you do, rather than are.
When it says the law is written on the tablets of the heart, this is what that means. It originates from within you, not from a book of laws external to you which you make an effort to follow. That is what "saved" really means. You are free from the source of sin, or lawlessness.