'Cruel' in the Bible

Otherwise, you will give up your vitality to othersand your years to someone cruel;

A kind man benefits himself,but a cruel man brings disaster on himself.

A righteous man cares about his animal’s health,but even the merciful acts of the wicked are cruel.

An evil man seeks only rebellion;a cruel messenger will be sent against him.

Fury is cruel, and anger a flood,but who can withstand jealousy?