'Master of the House' in the Bible

Therefore be alert, since you don’t know when the master of the house is coming—whether in the evening or at midnight or at the crowing of the rooster or early in the morning.

“So the slave came back and reported these things to his master. Then in anger, the master of the house told his slave, ‘Go out quickly into the streets and alleys of the city, and bring in here the poor, maimed, blind, and lame!’