2 Chronicles 19:10
And what cause soever shall come to you of your brethren that dwell in their cities, between blood and blood, between law and commandment, statutes and judgments, ye shall even warn them that they trespass not against the Lord, and so wrath come upon you, and upon your brethren: this do, and ye shall not trespass.
Cross-reference
Deuteronomy 17:8-13 gives detailed instructions for difficult cases, showing the precedent for Jehoshaphat's judicial reforms.
Ezekiel 3:18-21 emphasizes the watchman's duty to warn, directly parallel to the judges' responsibility to warn the people in 2 Chronicles 19:10.
Ezekiel 33:6 similarly warns of bloodguilt if the watchman fails to warn, mirroring the warning duty in Jehoshaphat's charge.
In Ezekiel 3:17, God appoints Ezekiel as a watchman to warn Israel — same duty as these judges who warn to avoid God's wrath.
Ezekiel 33:7 repeats the watchman's warning role; both passages require warning the people to prevent judgment.
Exodus 21:1 introduces the ordinances that judges were to apply, providing the legal basis for the cases mentioned here.
Exodus 22:9 gives a specific case of property dispute brought before God, similar to the 'matters of law' these judges handle.