Ephesians 6:9

and you masters have a just regard to them, by softning your authority: knowing that both their and your master is in heaven, where there is no respect of persons with him.

Colossians 4:1

as for you, masters, give to your servants what is just and suitable: considering that you also have a master in heaven.

Treasury of Scripture Knowledge

Summary

If I did despise the cause of my manservant or of my maidservant, when they contended with me;

Bible References

The cause

Ephesians 6:9
and you masters have a just regard to them, by softning your authority: knowing that both their and your master is in heaven, where there is no respect of persons with him.
Colossians 4:1
as for you, masters, give to your servants what is just and suitable: considering that you also have a master in heaven.