'Masters' in the Bible

And the people will take them with them to their place: and the children of Israel will give them a heritage in the Lord's land as men-servants and women-servants, making them prisoners whose prisoners they were; and they will be rulers over their masters.

And it will be a sign and a witness to the Lord of armies in the land of Egypt: when they are crying out to the Lord because of their cruel masters, then he will send them a saviour and a strong one to make them free.

And I will put it into the hand of your cruel masters, and of those whose yoke has been hard on you; who have said to your soul, Down on your face! so that we may go over you: and you have given your backs like the earth, even like the street, for them to go over.