en_tn/gal/02/21.md

I do not set aside the grace of God

"I do not reject the grace of God" or "I do not consider God's grace to be worthless"

the grace of God

Paul is speaking of God's kindness to us. Christ died for us so that we can be justified.

if righteousness could be gained through the law, then Christ died for nothing

Paul is describing a situation that never existed. Righteousness cannot be gained through the law, and Christ did not die for nothing. (See: rc://en/ta/man/translate/figs-hypo)

if righteousness could be gained through the law

"if people could become righteous by obeying the law"

then Christ died for nothing

"then Christ would have accomplished nothing by dying"