2 Kings 23

"Moreover Josiah put away those who consulted mediums and spiritists, the household gods and idols, all the abominations that were seen in the land of Judah and in Jerusalem, that he might perform the words of the law which were written in the book that Hilkiah the priest found in the house of the Lord. Now before him there was no king like him, who turned to the Lord with all his heart, with all his soul, and with all his might, according to all the Law of Moses; nor after him did any arise like him." vv.24-25

Read chapter 23
Josiah restores true worship.  This chapter is amazing reading all the Josiah did to tear down and destroy all the detestable things in Jerusalem that dishonored God and caused people to sin.  A lot of good kings in the past may have torn down a few things or didn't partake, but Josiah gets rid of it all not only the public forms of idolatry but the private things too.  This was all because he had found the book of the law (22:8) that showed God's righteous decrees and commands to desire him to turn to the Lord with all his heart, soul and might.  "His diligent study in God’s law, and his exact care, and unwearied industry, and fervent zeal, in rooting out idolaters, and all kinds and appearances of idolatry, not only in Judah, but in Israel also; and in the establishment of the true religion in all his dominions, and in the conforming of his own life, and his people’s too, (as far as he could,) to the holy law of God" (Benson Commentary).  How can you let the Word of God rule this way in you?