The smiting of a flinty rock, for the purpose of obtaining water, was a scheme of the Divine Mind, whose ways are higher than our ways, and his thoughts than our thoughts. It was certainly the last place to which Moses would have gone for water; and he might have expected the stroke to elicit sparks of fire, rather than cool refreshing streams. What eye had not seen and ear had not heard, either of men or of angels—what had not entered into the heart of any created being to conceive, terrestrial or celestials—was, that the smiting of the Shepherd should save the sheep; that the condemnation of the just should bring the unjust to God; that the making of Messiah a curse should secure infinite blessings to mankind; that the poverty of Jesus should enrich us, and his death raise us to life eternal. Consuming flames of Divine indignation might have been expected to flash upon the guilty world from every wound of the thorns, the nails and the spear, in the sacred person of Emmanuel; but, to the astonishment of men and angels, a tide of love and mercy ran freely from every bleeding vein, to wash away the guilt and pollution of human crimes, according to the determinate counsel and immutable promise of our God. The rock must be smitten by a rod. Had Moses been left to choose his own instrument, he would probably have taken a hammer, or perhaps a lever; but God commands him to take the rod. The rock would not have yielded water to any other instrument than the rod that smote the waters of Egypt, and turned them into blood. This rod was an emblem of the sovereignty of God over Israel, and is therefore called “the rod of God, which the Lord gave unto Moses”—as his deputy governor—“to lead Israel, and to work miracles before their eyes.” It was also a symbol of the royal law of Heaven; which, prior to the fall, was a rod of life; but afterward became a rod of iron, to break in pieces the offender—an angry serpent, to sting the transgressor with dreadful torments; and finally, when Christ endured the curse, and honored the violated mandate, by his death upon the tree, it was transformed again into a guiding and correcting rod. As the rock would have yielded water under no other stroke than that of “the rod of God,” so the sufferings of Christ would have been ineffectual, had they not happened under the law of the Father, and according to the counsel of Infinite Wisdom. When Isaac was about to be offered up on mount Moriah, the wood, the fire, and the knife, must all come from his father’s house, and the dreadful deed must be done by his father’s hand. So Jesus must die in no ordinary or accidental way. He must not suffer himself to be slain by the sword of Herod, nor cast over the brow of the hill by the people. He must receive the mortal cup from no other hand than that of the Father. He must die the appointed death; at the appointed time; in the appointed place, without the camp; and in the appointed manner, by hanging on a tree.