10 For there are many insubordinate, both idle talkers and deceivers, especially those of the circumcision
The second characteristic of false teachers is they have nothing of value to say.
both idle [empty] talkers
A characteristic of false teachers is that they have nothing true to say. Their talk is empty, with no value. They have no content in what they say.
1 Ti 1: 6 from which some, having strayed, have turned aside to idle talk,
1 Co 3: 20 and again, “The Lord knows the thoughts of the wise, that they are futile.”
Ti 3: 9 But avoid foolish disputes, genealogies, contentions, and strivings about the law; for they are unprofitable and useless.
False teachers sound plausible but ultimately they have nothing to say from God.
Fakers say, “No one believes the Bible anymore.” However, the Bible sits in judgment on us (He 4:12); we do not judge it. It is a discerner and critic of our hearts. Our severest critic is the Bible. The Word convicts us; it will not let us get away with what we otherwise would. It tells us when we are out of line. “Idle talkers” stand in opposition to those who hold fast the faithful word (1:9).
Listening to the talk of deceivers is often captivating. They use fine sounding words but there is no biblical content to what they say. They speak what appears to be plausible but their thoughts have no logic and are vacuous of any meaning from God. There is no value to what they teach.