Charles Ellicott Commentary Zechariah 8:16

"These are the things that ye shall do: speak ye every man the truth with his neighbor; execute the judgment of truth and peace in your gates;" — Zechariah 8:16 (ASV)

Judgment of truth and peace — i.e., in accordance with the true facts of the case, and such judgment as would tend to peace between man and man. (and contrast Malachi 2:8-9.)