'Master's' in the Bible

That servant who knew his master's will but did not get ready or do what his master asked will receive a severe beating.

But the one who did not know his master's will and did things worthy of punishment will receive a light beating. From everyone who has been given much, much will be required, and from the one who has been entrusted with much, even more will be asked.

So he contacted his master's debtors one by one. He asked the first, 'How much do you owe my master?'