KJV - I do not frustrate the grace of God: for if righteousness come by the law, then Christ is dead in vain.

ASV - I do not make void the grace of God: for if righteousness is through the law, then Christ died for nought.

BBE - I do not make the grace of God of no effect: because if righteousness is through the law, then Christ was put to death for nothing.

WEB - I don't make void the grace of God. For if righteousness is through the law, then Christ died for nothing!"

YLT - I do not make void the grace of God, for if righteousness `be' through law -- then Christ died in vain.

Notes