Josiah was eight years old when he became king of Judah. His grandfather was Manassah and his father Amon, both evil kings. While it seemed Josiah would follow the same path, he didn't. "He did that which was right in the sight of the LORD, and walked in the ways of David his father, and declined neither to the right hand, nor to the left" (2 Chronicles 34:2). What made such a difference?
As the text above testifies, Josiah found wonder in God's Word. When Josiah was a young man (age 26), a godly leader read to him the law (torah), which engaged his soul.
And the king stood in his place, and made a covenant before the LORD, to walk after the Lord, and to keep his commandments, and his testimonies, and his statutes, with all his heart, and with all his soul, to perform the words of the covenant which are written in this book. (2 Chronicles 34:31)
Such was the case of the psalmist. The earlier portions of Psalm 119 declare the good that he had done, but now his soul was motivated. He longed (v. 131) and cried for direction and help from the Lord: "Look thou upon me, and . . . Order my steps in thy word. . . . Deliver me from the oppression of man. . . . Make thy face to shine upon thy servant" (vv. 132-135).
These unselfish prayers were each coupled with a promise to obey. With his heart and correct behavior involved, the psalmist wept for those who "keep not thy law" (v. 136). When the hearts of God's people break because of sin, revival comes (2 Chronicles 7:14). HMM III http://www.icr.org/articles/type/6/