From the time of the first announcement to Abraham his descendants became the recipients of a special divine training, in which every event of their history had a forelooking to this great consummation. They were taken into Egypt, and, after long suffering, delivered from a deadly oppression. In the solemn hour of their deliverance the blood of a spotless lamb--"a lamb without blemish"--was to mark the door-posts of each dwelling with a sign of redemption. "Not a bone of him shall be broken," said the ancient command, referring to this typical sacrifice; and when in a later day the Apostle John stood by the cross of Jesus and saw them break the limbs of the other two victims and leave Jesus untouched, he said, "that it might be fulfilled which was commanded, not a bone of Him shall be broken." The yearly festival which commemorated this deliverance was a yearly prophecy in every Jewish family of the sinless Redeemer whose blood should be their salvation. A solemn ritual was instituted, every part of which was prophetic and symbolic. A high priest chosen from among his brethren, who could be touched with the feelings of their infirmities, was the only one allowed to enter that mysterious Holy of Holies where were the mercy-seat and the cherubim, the throne of the Invisible God. There, for the most part, unbroken stillness and solitude reigned. Only on one memorable day of the year, while all the congregation of Israel lay prostrate in penitence without, this high priest entered for them with the blood of atonement into the innermost presence of the King Invisible. Purified, arrayed in spotless garments, and bearing on his breast--graven on precious gems--the names of the tribes of Israel, he entered there, a yearly symbol and prophecy of the greater High Priest, who should "not by the blood of bulls and of goats, but by his own blood, enter at once into the holy place, having obtained eternal redemption for us." Thus, by a series of symbols and ceremonies which filled the entire life of the Jew, the whole national mind was turned in an attitude of expectancy towards the future Messiah. In the more elevated and spiritual natures--the poets and the prophets--this was continually bursting forth into distinct predictions. Moses says, in his last message to Israel, "A prophet shall the Lord your God raise up unto you from the midst of your brethren like unto me; unto Him shall ye hearken." Our Lord referred to this prophecy when he said to the unbelieving Jews, "Had ye believed Moses ye would have believed me, for he wrote of me."