Romans Verse fifteen
What then? shall we sin, because we are not under the law, but under grace? God forbid. (Romans 6:15)
Because God has so freely forgiven us through Christ, does this give us the liberty to live as we choose? Absolutely not! If new-covenant grace were a license to sin, then we would know that there had been a change in God. God always has desired that man behave justly, love mercy, and walk humbly with God. Any change in God would be the very worst of all possible calamities. If God changes it would be best that we never had been born.
If the holy city, the new Jerusalem, is to be filled with people who have not been delivered from sin or self-will but are abiding in a continual state of forgiveness, it would be good that we never had been born. Relationships would continue for eternity as they are in today's miserable state.
Contrary to the current teaching and preaching, new-covenant grace is not the Divine excuse for the sins of mankind. New-covenant grace is the inscribing of the Torah (Law of Moses) in the minds and hearts of people, transforming them into the image of Christ and bringing them into complete, restful union with the Father through Christ.
For us to continue to walk in sin after receiving Christ is for the dog to return to its vomit.
But it is happened unto them according to the true proverb, the dog is turned to his own vomit again; and the sow that was washed to her wallowing in the mire. (II Peter 2:22)