Ephesians 6:9

And masters, treat your slaves in the same way. Do not threaten them, since you know that he who is both their Master and yours is in heaven, and there is no favoritism with him.

since you know he who is both their Master and yours 
Job 31:13-15  "If I have denied justice to any of my servants, whether male or female, when they had a grievance against me, what will I do when God confronts me? What will I answer when called to account? Did not he who made me in the womb make them? Did not the same one form us both within our mothers?" 

and there is no favoritism with him 
Acts 10:34-35  Then Peter began to speak: "I now realize how true it is that God does not show favoritism but accepts from every nation the one who fears him and does what is right."
Deuteronomy 10:7  For the LORD your God is God of gods and Lord of lords, the great God, mighty and awesome, who shows no partiality and accepts no bribes.
2 Chronicles 19:7  "Now let the fear of the LORD be on you. Judge carefully, for with the LORD our God there is no injustice or partiality or bribery."
Job 34:18-19  "Is he not the One who says to kings, 'You are worthless,' and to nobles, 'You are wicked,' who shows no partiality to princes and does not favor the rich over the poor, for they are all the work of his hands?"
Romans 2:11  For God does not show favoritism.
Galatians 2:6  As for those who were held in high esteem--whatever they were makes no difference to me; God does not show favoritism--they added nothing to my message.
Colossians 3:25  Anyone who does wrong will be repaid for their wrongs, and there is no favoritism.
James 2:1  My brothers and sisters, believers in our glorious Lord Jesus Christ must not show favoritism.
1 Peter 1:17  Since you call on a Father who judges each person's work impartially, live out your time as foreigners here in reverent fear.

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984, 2011 by Biblica, Inc.® Used by permission. All rights reserved worldwide. 
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