Strong G114 ἀθετέω atheteō · to reject

Galatians

1. Galatians 2:21
   I do not frustrate the grace of God: for if righteousness come by the law, then Christ is dead in vain.
2. Galatians 3:15
   Brethren, I speak after the manner of men; Though it be but a man’s covenant, yet if it be confirmed, no man disannulleth, or addeth thereto.