'Master' in the Bible

people and priest alike,servant and master,female servant and mistress,buyer and seller,lender and borrower,creditor and debtor.

Now make a deal with my master, the king of Assyria. I’ll give you 2,000 horses if you’re able to supply riders for them!

But the Rabshakeh replied, “Has my master sent me to speak these words to your master and to you, and not to the men who are sitting on the wall, who are destined with you to eat their own excrement and drink their own urine?”

Perhaps Yahweh your God will hear all the words of the Rabshakeh, whom his master the king of Assyria sent to mock the living God, and will rebuke him for the words that Yahweh your God has heard. Therefore offer a prayer for the surviving remnant.’”

who said to them, “Tell your master this, ‘The Lord says: Don’t be afraid because of the words you have heard, which the king of Assyria’s attendants have blasphemed Me with.