'Harshly' in the Bible

You are not to rule over them harshly but fear your God.

You may leave them to your sons after you to inherit as property; you can make them slaves for life. But concerning your brothers, the Israelites, you must not rule over one another harshly.

He will stay with him like a man hired year by year. A foreign owner is not to rule over him harshly in your sight.