'Master's' in the Bible

Then the servant took ten of his master's camels and departed with all kinds of gifts from his master at his disposal. He journeyed to the region of Aram Naharaim and the city of Nahor.

saying "Praised be the Lord, the God of my master Abraham, who has not abandoned his faithful love for my master! The Lord has led me to the house of my master's relatives!"

My master's wife Sarah bore a son to him when she was old, and my master has given him everything he owns.

Then she will reply to me, "Drink, and I'll draw water for your camels too." May that woman be the one whom the Lord has chosen for my master's son.'

Then I bowed down and worshiped the Lord. I praised the Lord, the God of my master Abraham, who had led me on the right path to find the granddaughter of my master's brother for his son.

Rebekah stands here before you. Take her and go so that she may become the wife of your master's son, just as the Lord has decided."

Soon after these things, his master's wife took notice of Joseph and said, "Have sex with me."

But he refused, saying to his master's wife, "Look, my master does not give any thought to his household with me here, and everything that he owns he has put into my care.

So he asked Pharaoh's officials, who were with him in custody in his master's house, "Why do you look so sad today?"

Look, the money that we found in the mouths of our sacks we brought back to you from the land of Canaan. Why then would we steal silver or gold from your master's house?