Psalms 31:18

“Let the lying lips be put to silence, etc.] Being convicted of the lies told by them, and so silenced and confounded; or being cut off and destroyed, as all such will be in the Lord’s own time, (<191203>Psalm 12:3). It is very likely the psalmist may have respect either to Doeg the Edomite, who loved lying rather than righteousness; or to others that were about Saul, who lying said to him that David sought his harm, even to take away his kingdom and his life, (<195203>Psalm 52:3 <092409>1 Samuel 24:9); which speak grievous things proudly and contemptuously against the righteous; meaning himself; not that he thought himself righteous in the sight of God by any righteousness of his own, but by…”

“Let the lying lips be put to silence - See the notes at Psalms 12:2-3. The lips which speak lies. The reference here is especially to those who had spoken in this manner against the psalmist himself, though he makes the language general, or prays in general that God would silence all liars: a prayer certainly in which all persons may properly join. Which speak grievous things - Margin, “a hard thing.” The Hebrew word - עתק ‛âthâq - means “bold, impudent, wicked.” Gesenius, Lexicon. The phrase here means, therefore, to speak wickedly, or to speak in a bold, reckless, impudent manner; that is, without regard to the truth of what is said. Proudly and contemptuously - Hebrew, in pride and…”

“the lying: Psa 12:3, Psa 59:12, Psa 63:11, Psa 140:9-11; Pro 12:19; Isa 54:17; Joh 8:44; Rev 21:8; Rev 22:15 speak: Psa 64:3, Psa 64:4, Psa 123:3, Psa 123:4; Sa1 2:3; Ch2 32:16; Isa 37:22-24; Mat 10:25, Mat 12:24; Joh 8:48; Act 25:7 grievous things: Heb. a hard thing, Psa 94:4; Jde 1:15 Psalms 31:19”