When lost, the natural person is a slave to sin. But when born anew, the natural person becomes a new creature, set free from the yoke of slavery, while still clothed in our mortal flesh, still confronted with fleshly desires. Thus, those spiritually born anew are children of God, having been, past tense, set free from our bondage to sin. That does not mean we are not tempted to sin, or that we do not stumble and think thoughts or do acts that are sinful, but God does not apply the consequence or punishment for those "sinful acts" because all our sinful acts, past, present and future, have been forgiven and remembered no more forever.
This does not mean we are not to confess our sinful acts and strive to stay on the path of rightness for His names sake.
This does not mean we are not to confess our sinful acts and strive to stay on the path of rightness for His names sake.