Psalms 50:19

Thou sittest,.... Either in the chair of Moses, or on the seat of judgment, in the great sanhedrim of the nation; or, as Aben Ezra paraphrases it, "in the seat of the scornful";

and speakest against…

Thou givest thy mouth to evil - Margin, as in Hebrew, “thou sendest.” That is, they gave it up to evil; they employed it in evil: in falsehood, malice, deceit, slander, deception, detraction. And thy…

God, by the psalmist, having instructed his people in the right way of worshipping him and keeping up their communion with him, here directs his speech to the wicked, to hypocrites, whether they were…

Thou hast let loose thy mouth for evil,

And thy tongue contriveth deceit.

Giving way to unbridled speech, evil in substance and mischievous in aim: contriving a whole structure of deliberate…