2 Chronicles 19:8-10

8 Moreover in Jerusalem Jehoshaphat set from the Levites and the priests, and from the heads of the fathers of Israel for the judgment of LORD, and for controversies. And they returned to Jerusalem.

9 And he charged them, saying, Thus ye shall do in the fear of LORD, faithfully, and with a perfect heart.

10 And whenever any controversy shall come to you from your brothers who dwell in their cities, between blood and blood, between law and commandment, statutes and ordinances, ye shall warn them, that they not be guilty towards LORD, and so wrath come upon you and upon your brothers. Do this, and ye shall not be guilty.