'Master's' in the Bible

Naaman, commander of the army for the king of Aram, was a great man in his master’s sight and highly regarded because through him, the Lord had given victory to Aram. The man was a brave warrior, but he had a skin disease.

Elisha was sitting in his house, and the elders were sitting with him. The king sent a man ahead of him, but before the messenger got to him, Elisha said to the elders, “Do you see how this murderer has sent someone to cut off my head? Look, when the messenger comes, shut the door to keep him out. Isn’t the sound of his master’s feet behind him?”

When Jehu came out to his master’s servants, they asked, “Is everything all right? Why did this crazy person come to you?”Then he said to them, “You know the sort and their ranting.”

When this letter arrives, since your master’s sons are with you and you have chariots, horses, a fortified city, and weaponry,

select the most qualified of your master’s sons, set him on his father’s throne, and fight for your master’s house.

Then Jehu wrote them a second letter, saying: If you are on my side, and if you will obey me, bring me the heads of your master’s sons at this time tomorrow at Jezreel. All 70 of the king’s sons were being cared for by the city’s prominent men.

How then can you drive back a single officer among the least of my master’s servants and trust in Egypt for chariots and for horsemen?