Even as the testimony of Christ was confirmed in you:

Brethren, I speak after the manner of men; Though it be but a man's covenant, yet if it be confirmed, no man disannuls, or adds thereto.

And this I say, that the covenant, that was confirmed before by God in Christ, the law, which was four hundred and thirty years after, cannot disannul, that it should make the promise of no effect.

How shall we escape, if we neglect so great a salvation; which at the first began to be spoken by the Lord, and was confirmed unto us by them that heard him;

So God, willing more abundantly to show unto the heirs of promise the immutability of his counsel, confirmed it by an oath: