I do believe that the true Christians are free from committing sin. Their "old selves" have been crucified and a new creature was born of incorruptable seed.
If so-called Christians sin, they are under the law, "For by the law is the knowledge of sin." (Rom 3:20)
Jesus said, "Ye shall know the truth and the truth shall make you free."
Free of what?
Jesus' next words were, "Verily, verily, I say unto you, Whosoever committeth sin is the servant of sin." (Jo 8:32,34)
The truth has freed me from servitude to sin.
The only reason to have a problem with that is if you won't turn from sin (repent).