It was in this sense that Paul could say that the rock was Christ. The Israelites in the wilderness did not know that the rock was a type of Christ. They did not, as they drank of the water, think of One who was to come and satisfy the whole thirst of men. The types of Christ in the old times did not enable men to forecast the future; it was not through the future they exercised an influence for good on the mind. They worked by exciting there and then in the Jewish mind the same faith in God which Christ excites in our mind. It was not knowledge that saved the Jew, but faith, attachment to the living God. It was not the fragmentary and disjointed picture of a Redeemer thrown on the screen of his hopes by the types, nor was it any thought of a future Deliverer, which saved him, but his belief in God as his Redeemer there and then. This belief was quickened by the various institutions, providences, and objects by which God convinced the Jews that He was their Friend and Lord. Sacrifice they accepted as an institution of God's appointment intended to encourage them to believe in the forgiveness of sin and in God's favour; and without any thought of the realized ideal of sacrifice in Christ, the believing and devout Israelite entered through sacrifice into fellowship with God. Every sacrifice was a type of Christ; it did foreshadow that which was to be: but it was a type, not because it revealed Christ to those who saw or offered it, but because for the time being it served the same purpose as Christ now serves, enabling men to believe in the forgiveness of sins. But while in the mind of the Israelite there was no connection of the type with the Christ that was to come, there was in reality a connection between them. The redemption of men is one whether accomplished in the days of the Exodus or in our own time. The idea or plan of salvation is one, resting always on the same reasons and principles. The Israelites were pardoned in view of the incarnation and atonement of Christ just as we are. If it was needful for our salvation that Christ should come and live and suffer in human nature, it was also needful for their salvation. The Lamb was slain "from the foundation of the world," and the virtue of the sacrifice of Calvary was efficacious for those who lived before as well as for those who lived after it. To the mind of God it was present, and in His purpose it was determined, from the beginning; and it is in view of Christ's incarnation and work that sinners early or late have been restored to God. So that everything by which God instructed men and taught them to believe in His mercy and holiness was connected with Christ. It was to Christ it owed its existence, and really it was a shadow of the coming substance. And as the shadow is named from the substance, it may truly be said, "That Rock was Christ."