'Masters' in the Bible

And God gave them his blessing and said to them, Be fertile and have increase, and make the earth full and be masters of it; be rulers over the fish of the sea and over the birds of the air and over every living thing moving on the earth.

And he said, My masters, come now into your servant's house and take your rest there for the night, and let your feet be washed; and early in the morning you may go on your way. And they said, Not so, but we will take our night's rest in the street.