'Masters' in the Bible

“No one can serve two masters; for either he will hate the one and love the other, or he will be devoted to the one and despise the other. You cannot serve God and mammon [money, possessions, fame, status, or whatever is valued more than the Lord].

She said, “Yes, Lord; but even the pet dogs eat the crumbs that fall from their [young] masters’ table.”

Do not let yourselves be called leaders or teachers; for One is your Leader (Teacher), the Christ.