I Peter 2:16 As free, and not using your liberty for a cloke of maliciousness, but as the servants of God.
Grace frees us. It does not give us a license to sin but liberty to serve. God has graciously saved us and given us new life. He has taken the penalty of sin. He has erased our past and our future. He has saved us because He is good.
But that in no way frees us to sin. We are free to serve. We are free to make much of Jesus. He is good to us. We love Him. We serve Him.
Never use your salvation as an excuse to do anything other than love God, serve Him, and bring glory and honor to His name!