For jealousy is the rage of a man: therefore he will not spare in the day of vengeance.
– Proverbs 6:34
Whereas the starving thief may find sympathy from the man he has robbed and make restitution to him, the adulterer will not find any sympathy from the man whose wife he has taken. He will find rage, or furious anger fueled by his jealousy for his wife. He will show no leniency in vengeance. Vengeance could refer to seeking judicial punishment or exacting personal vengeance. Either way, the defrauded husband will not spare to press for all he can when the opportunity is given.