Proverbs 11:9

An hypocrite with his mouth destroyeth his neighbour: but through knowledge shall the just be delivered.

An hypocrite (or else, a profane person; Hebrew, chaneeph) with (his) mouth destroyeth his neighbour -

i.e., tries to destroy him by corruption (as the Hebrew may mean), or by plotting destruction against him secretly, while "with his mouth" pretending to be his friend.

But through knowledge shall the just be delivered. Through spiritual knowledge, imparted by God, the just is enabled to penetrate the hypocrite's schemes, and to evade them: for heavenly illumination teaches how "to refuse the evil, and choose the good" ().