2 Chronicles 19:8-10

8 Moreover, in Jerusalem Jehoshaphat placed [some] of the Levites and [of] the priests and of the heads of the fathers of Israel for the judgment of the LORD and for controversies. And they returned to Jerusalem.

9 And he charged them, saying, Ye shall proceed thus in the fear of the LORD, in truth and with a perfect heart.

10 In whatever case that shall come to you of your brethren that dwell in their cities, between blood and blood, between law and commandment, statutes or rights, ye shall warn them lest they become guilty against the LORD so that wrath will not come upon you and upon your brethren. Doing thus, ye shall not be guilty.