Titus 1:10

There are many unruly - Persons who will not receive the sound doctrine, nor come under wholesome discipline.

Vain talkers - Empty boasters of knowledge, rights, and particular privileges; all noise, empty parade, and no work.

Deceivers - Of the souls of men by their specious pretensions.

They of the circumcision - The Judaizing teachers, who maintained the necessity of circumcision, and of observing the rites and ceremonies of the Mosaic law, in order to the perfecting of the Gospel.