Judas was able to do the wicked things that he did because he never really knew Jesus. Sure, he learned about Him more than most people did. He spent 3 years walking with the Master. But he never personally knew Jesus.
If you can habitually sin without remorse, does that mean you are like Judas? Does that mean you don’t know God? Many people are running around today saying, “I’m a believer. I’m a follower of Jesus.” Yet, if they can persist in sin, something isn’t right.
The Bible doesn’t say that a Christian won’t sin, only that a Christian won’t habitually sin. As sinners, where do you need God to do surgery in your life?
1 John 3:9 (ESV)
9 No one born of God makes a practice of sinning, for God’s seed abides in him, and he cannot keep on sinning because he has been born of God.