'Master' in the Bible

And Jonathan cried after the lad, Make speed, haste, stay not. And Jonathan's lad gathered up the arrows, and came to his master.

And Nabal answered David's servants, and said, Who is David? and who is the son of Jesse? there are many servants now-a-days that break away every man from his master.

But one of the young men told Abigail, Nabal's wife, saying, Behold, David sent messengers out of the wilderness to salute our master; and he railed at them.

Now therefore know and consider what thou wilt do; for evil is determined against our master, and against all his house: for he is such a worthless fellow, that one cannot speak to him.

And David said unto him, To whom belongest thou? and whence art thou? And he said, I am a young man of Egypt, servant to an Amalekite; and my master left me, because three days ago I fell sick.

And David said to him, Wilt thou bring me down to this troop? And he said, Swear unto me by God, that thou wilt neither kill me, nor deliver me up into the hands of my master, and I will bring thee down to this troop.