This is true. I cannot unlearn what I have learned by the Spirit and God's Word. However, I also knew about doing good and and in doing evil even before I was saved, though. Good guys do good and bad guys do evil. I am sorry you and others here do not understand that concept. It's called morality.
I would be happy to clarify anything you are worried about with the Word of God any time.
Yes, it is only by His power and grace that I am able to stand up against opposition in such a way; And all salvation does belong to the LORD, too. But thank you for the kind words here.
All I have ever quoted to everyone here is the Word of God. Yes, it is true. Jesus sacrifice did change things in the Old Testament, but it did not allow for his saints to be sinners. It doesn't work like that. John says this, "Little children, let no man deceive you: he that doeth righteousness is righteous, even as he is righteous." John also says,, "He that committeth sin is of the devil;" John also says, "In this the children of God are manifest, and the children of the devil: whosoever doeth not righteousness is not of God, neither he that loveth not his brother." (1 John 3:7-8, 10).
But this is not in the Bible, though.
Proverbs 28:13 says if we confess and forsake sin we will have mercy.
IF..... IF.... we confess our sins, he is faithful and just to forgive us our sins (1 John 1:9). No confessing of sins (serious sins), then there is no forgiveness.
This is also in context to walking in the light, too.
For if we walk in the light as He is in the light, THEN....THEN.... the blood of Jesus Christ cleanses us from all sin (1 John 1:7).
Walking in the light is talking about keeping His commands. How so? Read 1 John 2:3-4. In 1 John 2:3 it is essentially saying you can have assurance in knowing Him if you find that you are keeping His Commandments. 1 John 2:4 says that he that says he knows Him and does not keep His commandments is a liar and the truth is not in him.
As for a believer in ceasing from sin: Again, the Bible does teach this. Read again 1 Peter 4:1, Galatians 5:24, and Romans 6:14 closely in prayer.
May God bless you, as well.
And may all good things in Christ Jesus be unto you.