Solomon
Proverbs 11:9BSB·traditional attribution

With his mouth the ungodly man destroys his neighbor, but through knowledge the righteous are rescued.

Jamieson-Fausset-Brown Reformed

(Compare Psa 35:16; Dan 11:32). The just is saved by superior discernment.

Geneva Bible Notes Reformed

An hypocrite with [his] mouth destroyeth his neighbour: but through knowledge shall the just be delivered. (d) A deceiver who pretends friendship, but privately is an enemy.

Keil & Delitzsch Lutheran

Pro 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).