True: sinning includes not doing what we know to do, the truth.
However, no one can be doing the truth, while still sinning against the truth:
For whosoever shall keep the whole law, and yet offend in one point, he is guilty of all. For he that said, Do not commit adultery, said also, Do not kill. Now if thou commit no adultery, yet if thou kill, thou art become a transgressor of the law.
We cannot do the truth of loving one another, if we are still hating God by lusting within the heart for sinning with the devil.
Drunkards, fornicators, idolators, etc... can be quite neighborly.
And so, the only thing we can do thru Christ to be saved with Him, is to stop our sinning against Him first.
Which begins within the heart:
Thou blind Pharisee, cleanse first that which is within the cup and platter, that the outside of them may be clean also.
Let the wicked forsake his way, and the unrighteous man his thoughts: and let him return unto the LORD, and he will have mercy upon him; and to our God, for he will abundantly pardon.
