1. And the Lord said. Moses passes on to another plague, whereby God took vengeance on the treachery and obstinacy of the wicked king; viz., that He gave over the remaining produce of the year, which He had spared, to be eaten and devoured by locusts. And this was no ordinary punishment, to destroy Egypt by dearth and famine, when all their corn had perished. But, before Moses proceeds to this, he again relates that he was the proclaimer of this plague, and that God had announced to him the reason why Pharaoh had so often resisted to his own injury. Therefore God says, that He had hardened his heart, in order that he might show forth these miracles and evidences of His power; for if Pharaoh had been humbled, and had yielded immediately, the contest would have been superfluous; since what would be the object of contending with a conquered and prostrate enemy? The obstinacy of the tyrant, then, in so often provoking God, opened the way to more miracles, as fire is produced by the collision of flint and iron. Thence also the silly imagination is refuted, that the heart of Pharaoh was no otherwise hardened than as the miracles were set. before his eyes; for Moses does not say that his heart was divinely hardened by the sight of the signs, but that it pleased God in this manner to manifest His power. Hence also we gather, that whatever occurred was predestinated by the sure counsel of God. For God willed to redeem His people in a singular and unusual way. That this redemption might be more conspicuous and glorious, He set up Pharaoh against himself like a rock of stone, which by its hardness might afford a cause for new and more remarkable miracles. Pharaoh was, therefore, hardened by the marvelous providence of God with this object, that the grace of His deliverance might be neither despicable nor obscure. For God regarded tits own people more than the Egyptians, as immediately appears, “that thou mayest tell in the ears of thy son, and of thy son’s son,” etc. For far more abundant material for thanksgiving and for celebrating the memory of their deliverance was afforded, by the fact of the Israelites having seen God’s arm stretched forth so often from heaven, and with so many prodigies. Had they been redeemed by any ordinary method, the praise due to God would soon have been forgotten. It was proper, then, that their posterity should be thus instructed by their fathers, that they might have no doubts as to the author of so illustrious a work. But it is here required of the fathers, who had been eye-witnesses of the signs, that they should be diligent and assiduous in teaching their children; and on these also, care and attention in learning is enjoined, that the recollection of God’s mercies should flourish throughout all ages. The practical effect of this doctrine is seen in Psalms 44 and Psalms 105