John Trapp on Proverbs 11:9

Verſ. 9. An Hypocrite with his mouth deſtroyeth] That is, the flatterer, ſlanderer, evil counſellour, but eſpecially the Heretick; as the Valentinians, Tertul. qui artificium habuerunt, quo prius perſuaderent quàm docerent, by their Pithanology, by good words, and fair ſpeeches, they deceive the hearts of the ſimple, Rom. 16.19. they bring men into the Lions mouth, as that old ſeducer did, by telling them of an Angel that ſpoke to them, and ſo make prize of them, Col. 2.8. and drag Diſciples after them, Act. 20.30.

But through knowledge ſhall the juſt bee delivered] Hee is too wiſe to bee flattered, and too knowing to bee plucked away with the errour of the wicked,Zanch. Miſc. [non-Latin text not transcribed] ▪ Dion. 1 Pet. 3.17, 18. Zanchius was ſet upon by Socinus; but the Heretick loſt his labour. Wherefore adde to your virtue knowledge, 2 Pet. 1.5. and have your ſenſes exerciſed to diſcern good and evil, Heb. 5. ult.