Paul characterized the false teachers as rebellious (against God"s truth) and empty talkers; their words were only human opinion rather than God"s Word. He also said they were deceivers. [1] Their listeners expected that what they were teaching was the truth, but it was not. Such men existed especially among the Jews, perhaps orthodox Jews, but mainly among Jewish Christians. Many Jews lived on the island of Crete. [2] Titus had to shut their mouths because they were causing great upheaval in the church. Their motive, Paul revealed, was money obtained illegitimately, probably by teaching falsehood under the guise of truth. According to Polybius, the Cretans had a reputation for loving money. [3][source]
"When a teacher or a preacher looks on his teaching or preaching as a career designed for personal advancement and personal profit and gain, he is in a perilous condition." [4][source]
"The term "households" may refer specifically to actual family units; however, the term probably refers to house-churches where most Christian instruction was conducted." [5][source]
I prefer the normal meaning of the word, which is family units. [source][source][source]