Colossians 4:1; NKJV
"Masters, give your bondservants what is just and fair, knowing that you also have a Master in heaven."
"master in heaven" - kurios - he to whom a person or thing belongs, about which he has the power of deciding; master, lord. Used universally, of the possessor and disposer of a thing, the owner. Kurios is a title of honor, expressive of respect and reverence, with which servants salute their master (Thayer’s)
We belong to the Lord Jesus. He has the power of deciding what we think, what we say, what we do. He owns us. We have a good Master...
