Yahweh: Slaves, obey your masters, even the harsh ones

"Slaves, in reverent fear of God submit yourselves to your masters, not only to those who are good and considerate, but also to those who are harsh."
1 Peter 2:18

"Slaves, obey your human masters in everything. Don't work only while being watched, in order to please men, but work wholeheartedly, fearing the Lord."
Colossians 3:22

"Slaves, obey your earthly masters with respect and fear, and with sincerity of heart, just as you would obey Christ."
Ephesians 6:5

The Bible and slavery