Deuteronomy 32:4

No less than six times in this chapter, and eighteen times in other places of the Old Testament, is the LORD distinguished by the title of a Rock; as if to show the firmness, durableness, and everlasting strength of the LORD, in his covenant relations to his people. And I beg the Reader to remark with me, the attention of Moses in this description of our covenant GOD. It would have been a striking account of JEHOVAH, had the man of GOD represented him under any of his glorious perfections, for all the attributes of GOD, are so many standards of character, to distinguish the excellency of his nature. But in this place he is speaking of him in a more endearing view; and how shall he do it more effectually than by assuring his people, that his faithfulness is like the rock of ages, Holy LORD! enable me, and enable the Reader, always to keep this view of thy immoveable, and unchanging love to thy people, in remembrance. See that precious continuation of this, Deuteronomy 7:9.