"Of the Danger of Heresies:
1) The Scriptures charge sin, perniciousness, and damnation upon them. Paul reckons them among those works of the flesh which shut persons out of the Kingdom of God (Galatians 5:20-21). Peter calls them pernicious and damnable, and such as bring swift
destruction; and, speaking of the authors of them, he says that their damnation slumbers not (2 Peter 2:1-3).
2) Heresies are compared in Scripture sometimes to gangrene or canker, 2 Timothy 2:17, “Their word will eat as doth a canker.” The canker is an invading ulcer, creeping from joint to joint, corrupting one part after another till, at length, it eats out the very heart and life.
3) Christ and His apostles give special charges and caveats against them, to take heed and beware of them, which they never would have done had they not been dangerous. Mark 8:15, “Beware of the leaven of the Pharisees.” Matthew 7:15, “Beware of False Prophets.” Philippians 3:2, “Beware of dogs, beware of evil workers, beware of the concision.” 2 Peter 3:17, “Beware, lest ye also, being led away with the error of the wicked, fall from your own steadfastness.”
Obadiah Sedgwick
1) The Scriptures charge sin, perniciousness, and damnation upon them. Paul reckons them among those works of the flesh which shut persons out of the Kingdom of God (Galatians 5:20-21). Peter calls them pernicious and damnable, and such as bring swift
2) Heresies are compared in Scripture sometimes to gangrene or canker, 2 Timothy 2:17, “Their word will eat as doth a canker.” The canker is an invading ulcer, creeping from joint to joint, corrupting one part after another till, at length, it eats out the very heart and life.
3) Christ and His apostles give special charges and caveats against them, to take heed and beware of them, which they never would have done had they not been dangerous. Mark 8:15, “Beware of the leaven of the Pharisees.” Matthew 7:15, “Beware of False Prophets.” Philippians 3:2, “Beware of dogs, beware of evil workers, beware of the concision.” 2 Peter 3:17, “Beware, lest ye also, being led away with the error of the wicked, fall from your own steadfastness.”
Obadiah Sedgwick