Now that we have found grace, "shall we continue in sin?" No, in Christ we are dead to sin, and how can one dead to sin live in it? When we were baptized it was unto Christ's death. We were buried with Him in baptism in the waters of death, and as Christ was raised out from the dead, by the glory of the Father, so we should walk accordingly in the new character of life.
By being crucified with Christ, the body of sin is annulled in the old Adam man, so we should no more serve sin. Being dead, we are freed from sin; Christ raised from the dead dies no more; death has no dominion over Him. He died unto sin once. He lives unto God, and I live in Him.
Just so, we consider ourselves to be dead unto sin but we are alive unto God, through the Lord Jesus. We are not to yield our bodies to sin or let sin reign, but live unto God.
Being under grace, not law, sin can have no dominion over us. If we sin we become the servants of sin, but now we are the servants of righteousness and bear fruit unto God.
Death is sin's wages; eternal life is God's gift.