7. And I will take you to me. The end of their liberation is here described in the continued tenor of His grace. For it would have been little that the people should once be redeemed from Egypt, unless, when redeemed, they had lived under the defense and guardianship of God. As, therefore, He had long since separated the holy seed of Abraham from the other nations by circumcision, He now again sets it apart, ( sanctificat,) and promises that he will be their God. In these words, then, their peculiar election, as well as its perpetuity, is asserted; since to be accounted the people of God means the same as to be by especial privilege received into his favor, and to be called by adoption to the hope of eternal salvation. But the future tense shews that the benefit was not to be merely temporal, when God with a stretched-out arm shall bring the people out of Egypt, but that this should only be the beginning of eternal protection. Moreover, we should observe the anagoge or similitude between us and the Israelites, because God has once delivered us by the hand of his only-begotten Son from the tyranny of Satan, to this end, that he may always pursue us with his paternal love. Afterwards he subjoins the possession of the land of Canaan as an earnest or pledge, which was given to the Israelites, in order that God might always dwell among them, protect them with his aid, and defend them with his power. I have said that this was the earnest of their adoption, because the faith of the fathers was not to be tied to earthly blessings, but to tend to an higher object. Meanwhile, by this outward sign God shewed them that they were his peculiar people, for whose habitation he chose the land in which he would be worshipped. By saying He “would lift up his hand,” (75) He means in confirmation, because the promise was ratified by the addition of an oath. It is indeed certain that there is enough and more than enough steadfastness in the simple word of God; but He made this concession to man’s weakness, and interposed His sacred name as a pledge, that they might with fuller confidence be persuaded that nothing was promised them in vain. To lift up the hand, means to swear; a similitude taken from men, who, by this gesture, testify that they speak in the sight of God, as if they would call Him down as a witness from heaven. This is not applicable to God, who swears by Himself, because there is none greater to whom He may lift His hand, (Hebrews 6:13;) but, metaphorically, the custom of men is transferred to Him. As to the insertion, that “they should know that He was the Lord,” after they had been brought forth, it contains an indirect rebuke; since that knowledge is too late which comes after the event. But at the same time, He promises that He would cause them openly to experience how true He is in all His sayings, that the Israelites may more constantly expect their redemption. Repeating at the close that He is Jehovah, He magnifies (as He had just before done) His invincible power, which easily surmounts all impediments; whilst this expression also contains a testimony to His truth, as if He had said that He alone can be safely trusted to, because He is both faithful in His promises and possessed of infinite power.
(75) Vide margin of A. V.