Of him no further information is available in the Bible.
Hymenaeus.
See 1 Tim. 1:20. To be remembered only for subversion and ungodly behavior is the height of tragedy.
Canker.
Gr. gaggraina, “gangrene,” that is, a disease that eats away the flesh and continually spreads to other parts of the body. The loquacious word battlers (v. 14) and empty talkers (v. 16) feed on the attention given them.
Eat.
The damage caused by empty religious chatter (v. 16) will spread. Such would-be teachers should not even be given a hearing, but shunned altogether.