'Master' in the Bible

It is sufficient for the disciple that he should become as his teacher, and the bondman as his lord. If they have called the master of the house Beelzebub, how much more those of his household?

And on receiving it they murmured against the master of the house,

But know this, that if the master of the house had known in what watch the thief was coming, he would have watched and not have suffered his house to be dug through into.