The Oracle, like the New Jerusalem of the Apocalypse, was a perfect cube, 30 feet broad and long and high, covered with gold, but shrouded in perpetual and unbroken darkness.[271] No light was ever visible in it save such as was shed by the crimson gleam of the thurible of incense which the high priest carried into it once a year on the Great Day of Atonement.[272] In the centre of the floor must apparently have risen the mass of rock which is still visible in the Mosque of Omar, from which it is called _Al Sakhra_, "the Dome of the Rock." Tradition pointed to it as the spot on which Abraham had laid for sacrifice the body of his son Isaac, when the angel restrained the descending knife. It was also the site of Araunah's threshing-floor, and had been therefore hallowed by two angelic apparitions.[273] On it was deposited with solemn ceremony the awful palladium of the Ark, which had been preserved through the wanderings and wars of the Exodus and the troublous days of the Judges.[274] It contained the most sacred possession of the nation, the most priceless treasure which Israel guarded for the world. This treasure was the Two Tables of the Ten Commandments, graven (in the anthropomorphic language of the ancient record) by the actual finger of God; the tables which Moses had shattered on the rocks of Mount Sinai as he descended to the backsliding people.[275] The Ark was covered with its old "Propitiatory," or "Mercy-seat," overshadowed by the wings of two small cherubim; but Solomon had prepared for its reception a new and far more magnificent covering, in the form of two colossal cherubim, 15 feet high, of which each expanded wing was 7-1/2 feet long. These wings touched the outer walls of the Oracle, and also touched each other over the centre of the Ark. Such was the Temple. It was the "forum, fortress, university, and sanctuary" of the Jews, and the transitory emblem of the Church of Christ's kingdom. It was destined to occupy a large share in the memory, and even in the religious development, of the world, because it became the central point round which crystallised the entire history of the Chosen People. The kings of Judah are henceforth estimated with almost exclusive reference to the relation in which they stood to the centralised worship of Jehovah. The Spanish kings who built and decorated the Escurial caught the spirit of Jewish annals when, in the Court of the Kings, they reared the six colossal statues of David the originator, of Solomon the founder, of Jehoshaphat, Hezekiah, Josiah, and Manasseh the restorers or purifiers of the Temple worship.[276]