Leviticus 20:10 "'The man who commits adultery with another man's wife, even he who commits adultery with his neighbor's wife, the adulterer and the adulteress shall surely be put to death. (See NAS)
Leviticus 25:14 "'If you sell anything to your neighbor, or buy from your neighbor, you shall not wrong one another. (See NAS)
Proverbs 27:17 Iron sharpens iron; so a man sharpens his friend's countenance. (WEB)