Commentary on Harmony of the Law Volume 1 Complete John Calvin
HARMONY OF THE LAW · VOLUME 1 minds of his own race, and to the proud tyranny of Egypt. The question now arises, whether the change of the rod into a serpent was real, and actual, or whether the outward form only was changed? Although I should be unwilling to contend pertinaciously for a thing of little consequence, I embrace that opinion which is more probable, that not merely an image or vision appeared, but that God, who created all things out of nothing, gave a new nature to the rod, and again made a rod out of the serpent, which was in no degree more difficult than to change Lot's wife into a pillar of salt. (Genesis 19:26.) Since this was easy to God's power, it does not appear likely to me that He had recourse to the illusion of visions. As to the imitation of the magicians, we will speak of their sorceries in their proper place.
5. That they may believe. This spectacle, then, was not shewn to Moses once only, but the power was imparted to him also of frequently repeating the miracle; both to acquire credit from the Israelites, and to repress the audacity of Pharaoh. For although the sentence is incomplete, there is no ambiguity in the sense, viz., that Moses is armed with power from heaven to make his vocation sure, and that none may doubt him to be a Prophet divinely commissioned. It would be tedious here to dilate expressly on the use of miracles, suffice it briefly to lay down, that they sometimes serve as preparatives to faith, sometimes for its confirmation. We see an example of both in the metamorphosis of the rod, by which Moses was the more animated and encouraged to gather strength, although he already believed God's promise; but the Israelites, who were both incredulous and unteachable, were prepared and compelled to believe. Besides, the miracle opened a door of faith with the Israelites, that, being persuaded of his prophetical office, they might submit to be taught; whilst he was himself led on to greater assurance and perseverance. For although the Almighty begins further back, and refers to the adoption of the patriarchs, and this was calculated to lay the foundation of their hope of redemption, it still does not follow that they were prepared to receive Moses, until the authority of his ministry had been established. Wherefore, I have said, that their faith was commenced by the miracle.
6. Put now thy hand into thy bosom. By this sign Moses was instructed that what is in the greatest vigour withers away at once, at the command of God; and that what is dry is thus restored to its original vigour; in a word, the statement of Paul was confirmed by it, that God "calleth those things which be not, as though they were." (Romans 4:17.) It was, so to say, a kind of leprosy, when Moses was banished from the court into the land of Midian, where he led his flock through wild and rough places, among thorns and brambles. After he had passed forty years like one half-dead, having no dignity or name, he regained, as by a restoration, (postliminio) what he had lost. Therefore God now promises him that he would soon restore what He had taken away. This is the simple connection of the sign with its effect, with which sober readers will be content, without giving heed to