Galatians 2:21; Galatians 3:15

Galatians 2:21

21 "I do not nullify the grace of God, for if righteousness comes through the Law, then Christ died needlessly."

Galatians 3:15

15 Brethren, I speak in terms of human relations: even though it is only a man's covenant, yet when it has been ratified, no one sets it aside or adds conditions to it.