10 For there are many insubordinate, both idle talkers and deceivers, especially those of the circumcision
Deceivers always mislead others, taking them away from what is true by using the Bible itself. This is the devil’s business (Re 12:9). If he can deceive us, he will. He sends out his minions to distort who and what God is. Deceivers draw people into their false doctrine by deceit. These people attractively lure others into what they believe. They want to make others believe that they are teaching the truth.
2 Ti 3: 13 But evil men and impostors will grow worse and worse, deceiving and being deceived.
especially [namely] those of the circumcision [Jewish false teachers],
“Circumcision” was the surgical removal of the foreskin of the penis. Circumcision above all symbolized a Jew. Legalizers rejecting the principle of grace deceived congregations into moving away from their freedom in Christ (Ga 5:1).
Ga 2: 12 for before certain men came from James, he would eat with the Gentiles; but when they came, he withdrew and separated himself, fearing those who were of the circumcision.
All false teaching is willful and culpable.
No false teacher is an innocent seeker of truth; rebellion resides in his soul. We should not look upon false teachers as guiltless. They consciously defy God and His Word. They go on meaningless speculation not rooted in Scripture. Their discussions are vacuous.
We forget that all heresy is satanic and has a supernatural quality to it. As such, it seeks to deceive true believers. False teachers misrepresent God’s Word to fit their concocted schemes. This is where they do their most insidious work.
Some evangelicals are misled by phony religion because they want to hear some new thing (1 Ti 4:1-2; 2 Ti 4:3-4).