Galatians 2:21

I do not frustrate the grace of God: for if righteousness come by the law, then Christ is dead in vain.
— Galatians 2:21, King James Version

In other translations

World English Bible (WEB)

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

American Standard Version (ASV)

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

Young's Literal Translation (YLT)

I do not make void the grace of God, for if righteousness <FI>be<Fi> through law--then Christ died in vain.