King Josiah of Judah (640-609) is a character of immense importance for the history of ancient Israel and Judah. A sixteenth-generation lineal descendant of King David, Josiah became king as a child of only eight years old and soon focused attention to the God of David, in contrast to his father Amon, and grandfather Manasseh who had overturned all of the honorable reforms of his noble great-grandfather Hezekiah. One would think that Josiah would follow in the footsteps of his father and grandfather's wicked ways. They had practiced child sacrifice, witchcraft, and consultation of spiritual mediums. There were many sites that stood throughout his kingdom that were places for idolatrous worship such as shrines to Baal, Asherah, astral deities, and numerous other abominations to Yahweh. However, it was at age 15 that he began to search for the God of David and at age 19; he undertook reforms to end idol worship in his land and removed Jerusalem's shrines to Asherah and Baal. In 622 B.C., in the eighteenth year of his reign, Josiah authorized the restoration of Jerusalem's Temple. As his workforce was cleaning, they found a Torah scroll that no one had ever heard of. This scroll is commonly identified as a form of Deuteronomy and became the foundation of a grand plan of religious reform and national reestablishment in which all pagan sites of worship were destroyed throughout Israel. He made the Jerusalem Temple the chief place of worship while attempting to reunite Israel and Judah as an independent monarchy under the royal house of David. "Before him there was no king like him, who turned to the Lord with all his heart and with all his soul and with all his might, according to all the law of Moses; nor did any like him arise after him," says 2 Kings 23:25 of Josiah which is a praise unequal to any other biblical king.
It is not easy to express sufficiently the scale of the achievements of Josiah's reign.