Joseph Benson's Commentary of the Old and New Testaments - 2 Timothy 2:16-18
2 Timothy 2:16-18. But shun profane and vain babblings See on 1 Timothy 1:4; for they will increase, &c. Though the evil of some of them may not immediately appear, and they may seem trifling rather than mischievous, they will advance unto more impiety; for the persons who so babble, having been prevailed on by Satan to quit the right way of experimental and practical godliness, will proceed not only to neglect, but even to deny, the most essential articles of the Christian faith. ... read more
Albert Barnes' Notes on the Whole Bible - 2 Timothy 2:17
And their word - The word, or the discourses of those who love vain and idle disputations.Will eat as doth a canker - Margin, “gangrene.” This word - γάγγραινα gangraina - occurs nowhere else in the New Testament. It is derived from γραιω graiō, γραινω grainō, to devour, corrode,” and means “gangrene” or “mortification” - the death of a part, spreading, unless arrested, by degrees over the whole body. The words rendered “will eat,” mean “will have nutriment;” that is, will spread over and... read more