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

Ephesians 6:9
And masters, do the same for your slaves. Give up your use of threats, because you know that He who is both their Master and yours is in heaven, and there is no favoritism with Him.

Colossians 4:1
Masters, supply your slaves with what is right and fair, since you know that you also have a Master in heaven.

Genesis 42:18
and on the third day he said to them, "I fear God. So do this and you will live:

Exodus 1:13
They worked the Israelites ruthlessly

Exodus 1:14
and made their lives bitter with hard labor in brick and mortar, and with all kinds of work in the fields. Every service they imposed was harsh.

Leviticus 25:42
Because the Israelites are My servants, whom I brought out of the land of Egypt, they are not to be sold as slaves.

Leviticus 25:44
Your menservants and maidservants shall come from the nations around you, from whom you may purchase them.

Leviticus 25:46
You may leave them to your sons after you to inherit as property; you can make them slaves for life. But as for your brothers, the Israelites, no man may rule harshly over his brother.

Leviticus 25:53
He shall be treated like a man hired from year to year, but a foreign owner must not rule over him harshly in your sight.

Ezekiel 34:4
You have not strengthened the weak, healed the sick, bound up the injured, brought back the strays, or searched for the lost. Instead, you have ruled them with violence and cruelty.

You shall not rule over him with rigor; but shall fear your God.