Proverbs 11:9

9 The wicked with his mouth prepareth destruction for his neighbour; But by knowledge the righteous are delivered from it. The lxx translate, ἐν στόματι ἀσεβῶν παγὶς (רשׁת?) πολίταις, αἴσθησις δὲ δικαίοις εὔοδος, (יצלחו). There is no reason for changing (with Hitzig and Ewald) the text, which in the form in which it is here translated was before all other translators (Aq., Symmachus, Theodotion, Syr., Targ., Jerome). The accentuation, which separates the two instrumental statements by greater disjunctives from that which follows, is correct. The "three" Greek versions viz. of Aquila, Theodotion, and Symmachus translate חנף by ὑποκριτής, which it means in the modern idiom; but in the ancient Hebr. it signifies, him who is resolved upon evil, as in Arab. ḥanyf, him who is resolved upon that which is right: he who turns aside to evil enters on a path far removed from that which is right. In ישׁחית one is reminded (without any etymological reason) of שׁחת (pit), and so in יחלצוּ of משּׁחיתותם (Psa 107:20) or a similar word; but בּדּעת contains the reference, in this connection not easy to be mistaken, to the hostile purposes of the wicked masked by the words of the mouth, which are seen through by the righteous by virtue of knowledge which makes them acquainted with men. This penetrating look is their means of deliverance.

Here is, 1. Hypocrisy designing ill. It is not only the murderer with his sword, but the hypocrite with his mouth, that destroys his neighbour, decoying him into sin, or into mischief, by the specious pretences of kindness and good-will. Death and life are in the power of the tongue, but no tongue more fatal than the flattering tongue. 2. Honesty defeating the design and escaping the snare: Through knowledge of the devices of Satan shall the just be delivered from the snares which the hypocrite has laid for him; seducers shall not deceive the elect. By the knowledge of God, and the scriptures, and their own hearts, shall the just be delivered from those that lie in wait to deceive, and so to destroy, Rom 16:18, Rom 16:19.