Don't be deceived sin is real and so is the devil.
Everyone who sins is breaking God's law, for all sin is contrary to the law of God. And, you know that JESUS came to take away our sins, and there is no sin in HIM.
Anyone who continues to live in HIM will not sin. But anyone who keeps on sinning does not know HIM or understand who HE is.
1 JOHN 3:4-6
...don't let anyone deceive you about this: When people do what is right, it shows that they are righteous. But when people keep on sinning, it shows that they belong to the devil, who has been sinning since the beginning...
1 John 3 7-8