Galatians 3:15

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.

Galatians 3:17

3:17 And this I say, [that] the covenant, that was confirmed before of God in Christ, the law, which was four hundred and thirty years after, cannot disannul, that it should make the promise of none effect.