Matthew Henry on Deuteronomy 16:18-22

Care is taken for the due administration of justice. All personal regards must be laid aside, so that right is done to all, and wrong to none. Care is taken to prevent following the idolatrous customs of the heathen. Nothing belies God more, or tends more to corrupt the minds of men, than representing and worshipping, by an image, that God, who is an almighty and eternal Spirit, present every where. Alas! even in gospel days, and under a better dispensation, established upon better promises, there is a tendency to set up idols, under one form or another, in the human heart.