Leviticus 25:14 - Clarke's commentary and critical notes on the Bible

And if thou sell ought unto thy neighbour, or buyest ought of thy neighbour's hand, ye shall not oppress one another: Ye shall not oppress one another - Ye shall take no advantage of each other's ignorance either in buying or selling; for he that buys an article at less than it is worth, or sells one for more than it is worth, taking advantage in both cases of the ignorance of the vender or buyer, is no better than a thief, as he actually robs his neighbor of as much property as he has bought the article at below or sold it above its current value.