Deuteronomy 1:16-17

16I furthermore admonished your judges at that time that they should pay attention to issues among your fellow citizens and judge fairly, whether between one citizen and another or a citizen and a resident foreigner.

17They must not discriminate in judgment, but hear the lowly and the great alike. Nor should they be intimidated by human beings, for judgment belongs to God. If the matter being adjudicated is too difficult for them, they should bring it before me for a hearing.