Galatians 3:13-15

13 Christ purchased our freedom and redeemed us from the curse of the Law and its condemnation by becoming a curse for us—for it is written, "Cursed is everyone who hangs [crucified] on a tree (cross)"—

14 in order that in Christ Jesus the blessing of Abraham might also come to the Gentiles, so that we would all receive [the realization of] the promise of the [Holy] Spirit through faith.

15 Brothers and sisters, I speak in terms of human relations: even though a last will and testament is just a human covenant, yet when it has been signed and made legally binding, no one sets it aside or adds to it [modifying it in some way].