Psalms 68:7

7O God! when thou wentest forth before thy people, etc. The Psalmist now proceeds to show that the Divine goodness is principally displayed in the Church, which God has selected as the great theater where his fatherly care may be manifested. What follows is evidently added with the view of leading the posterity of Abraham, as the Lord’s chosen people, to apply the observations which had been just made to themselves. The deliverance from Egypt having been the chief and lasting pledge of the Divine favor, which practically ratified their adoption under the patriarch, he briefly adverts to that event. He would intimate that in that remarkable exodus, proof had been given to all succeeding ages of the love which God entertained for his Church. Why were so many miracles wrought? why were heaven and earth put into commotion? why were the mountains made to tremble? but that all might recognize the power of God as allied with the deliverance of his people. He represents God as having been their leader in conducting them forth. And this not merely in reference to their passage of the Red Sea, but their journeys so long as they wandered in the wilderness. When he speaks of the earth being moved, he would not seem to allude entirely to what occurred upon the promulgation of the law, but to the fact that, throughout all their progress, the course of nature was repeatedly altered, as if the very elements had trembled at the presence of the Lord. It was upon Mount Sinai, however, that God issued the chief displays of his awful power; it was there that thunders were heard in heaven, and the air was filled with lightnings; and, accordingly, it is mentioned here by name as having presented the most glorious spectacle of the Divine majesty which was ever beheld. Some read, This Sinai, etc., connecting the pronoun זה, zeh, with the mountain here named; but it is much more emphatical to join it with the preceding clause, and to read, the heavens dropped at the presence of This God; David meaning to commend the excellency of the God of Israel. The expression is one frequently used by the prophets to denote that the God worshipped by the posterity of Abraham was the true God, and the religion delivered in his law no delusion, as in Isaiah 25:9, “This, this is our God, and he will save us.” To establish the Lord’s people in their faith, David leads them, as it were, into the very presence of God; indicates that they were left to no such vague uncertainties as the heathen; and indirectly censures the folly of the world in forsaking the knowledge of the true God, and fashioning imaginary deities of its own, of wood and stone, of gold and silver.