Genesis 28:13

13. I am the Lord God of Abraham. This is the third point which, I said, was to be noticed: for mute visions are cold; therefore the word of the Lord is as the soul which quickens them. The figure, therefore, of the ladder was the inferior appendage of this promise; just as God illustrates and adorns his word by external symbols, that both greater clearness and authority may be added to it. Whence also we prove that sacraments in the Papacy are frivolous, because no voice is heard in them which may edify the soul. We may therefore observe, that whenever God manifested himself to the fathers, he also spoke, lest a mute vision should have held them in suspense. Under the name יהוהJehovah God teaches that he is the only Creator of the world, that Jacob might not seek after other gods. But since his majesty is in itself incomprehensible, he accommodates himself to the capacity of his servant, by immediately adding, that he is the God of Abraham and Isaac. For though it is necessary to maintain that the God whom we worship is the only God; yet because when our senses would aspire to the comprehension of his greatness, they fail at the first attempt; we must diligently cultivate that sobriety which teaches us not to desire to know more concerning him than he reveals unto us; and then he, accommodating himself to our weakness, according to his infinite goodness, sill omit nothing which tends to promote our salvation. And whereas he made a special covenant with Abraham and Isaac, proclaiming himself their God, he recalls his servant Jacob to the true source of faith, and retains him also in his perpetual covenant. This is the sacred bond of religion, by which all the sons of God are united among themselves, when from the first to the last they hear the same promise of salvation, and agree together in one common hope. And this is the effect of that benediction which Jacob had lately received from his father; because God with his own mouth pronounces him to be the heir of the covenant, lest the mere testimony of man should be thought illusive.

The land whereon thou liest. We read that the land was given to his posterity; yet he himself was not only a stranger in it to the last, but was not permitted even to die there. Whence we infer, that under the pledge or earnest of the land, something better and more excellent was given, seeing that Abraham was a spiritual possessor of the land, and contented with the mere beholding of it, fixed his chief regard on heaven. We, may observe, however, that the seed of Jacob is here placed in opposition to the other sons of Abraham, who, according to the flesh, traced their origin to him, but were cut off from the holy people: yet, from the time when the sons of Jacob entered the land of Canaan, they had the perpetual inheritance unto the coming of Christ, by whose advent the world was renewed.