'Master's' in the Bible

Then the servant took ten of his master’s camels, and set out, taking some of his master’s good things with him; so he got up and journeyed to Mesopotamia [between the Tigris and the Euphrates Rivers], to the city of Nahor [the home of Abraham’s brother].

He said, “Blessed be the Lord, the God of my master Abraham, who has not denied His lovingkindness and His truth to my master. As for me, the Lord led me to the house of my master’s brothers.”

Now Sarah my master’s wife bore a son to my master when she was in her old age, and he has given everything that he has to him.

and if she says to me, “You drink, and I will also draw [water] for your camels”; let that woman be the one whom the Lord has selected and chosen [as a wife] for my master’s son.’

And I bowed down my head and worshiped the Lord, and blessed the Lord, the God of my master Abraham, who had led me in the right way to take the daughter of my master’s brother to his son [as a wife].

Rebekah is before you; take her and go, and let her be the wife of your master’s son, as the Lord has spoken.”

Then after a time his master’s wife looked at Joseph with desire, and she said, “Lie with me.”

But he refused and said to his master’s wife, “Look, with me in the house, my master does not concern himself with anything; he has put everything that he owns in my charge.

So he asked Pharaoh’s officials who were in confinement with him in his master’s house, “Why do you look so down-hearted today?”

Is this not my lord’s drinking cup and the one which he uses for divination? You have done [a great and unforgivable] wrong in doing this.’”

Please remember, the money which we found in the mouths of our sacks we have brought back to you from the land of Canaan. Is it likely then that we would steal silver or gold from your master’s house?

With whomever of your servants your master’s cup is found, let him die, and the rest of us will be my lord’s slaves.”