9 The testimony of the Prophets is even more abundant. That of Isaias is well known: "For a child is born to us and a son is given to us, and the government is upon his shoulder, and his name shall be called Wonderful, Counselor, God the mighty, the Father of the world to come, the Prince of Peace. His empire shall be multiplied, and there shall be no end of peace. He shall sit upon the throne of David and upon his kingdom; to establish it and strengthen it with judgment and with justice, from henceforth and for ever." With Isaias the other Prophets are in agreement. So Jeremias foretells the "just seed" that shall rest from the house of David - the Son of David that shall reign as king, "and shall be wise, and shall execute judgment and justice in the earth." So, too, Daniel, who announces the kingdom that the God of heaven shall found, "that shall never be destroyed, and shall stand for ever." And again he says: "I beheld, therefore, in the vision of the night, and, lo! one like the son of man came with the clouds of heaven. And he came even to the Ancient of days: and they presented him before him. And he gave him power and glory and a kingdom: and all peoples, tribes, and tongues shall serve him. His power is an everlasting power that shall not be taken away, and his kingdom shall not be destroyed." The prophecy of Zachary concerning the merciful King "riding upon an ass and upon a colt the foal of an ass" entering Jerusalem as "the just and savior," amid the acclamations of the multitude, was recognized as fulfilled by the holy evangelists themselves.
Source: Quas Primas (Vatican.va)