Galatians 3:15 - Joseph Benson’s Commentary on the Old and New Testaments

I speak after the manner of men I illustrate this by a familiar instance, taken from the practice of men: or, I argue on the principles of common equity, according to what is the allowed rule of all human compacts: Though it be but a man's covenant That is, the covenant of a man with his fellow-creature: yet if it be confirmed Legally, by mutual promise, engagement, and seal; no man No, not the covenanter himself, unless something unforeseen occur, which cannot be the case with God; disannulleth What was agreed to by it; or addeth thereto Any new condition, or altereth the terms of it, without the consent of the other stipulating party.