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.
All Commentaries on Galatians 3:15 Go To Galatians 3
Augustine of Hippo
AD 430
The value that a testator’s death has for confirming his testament is final, since he cannot then change his mind. This is the value that the immutability of God’s promise has in confirming the inheritance of Abraham, whose faith was reckoned for righteousness.