O Lord, station a guard over my mouth and a door enclosing my lips
Other versions
King James Version
They have sharpened their tongues like a serpent; adders' poison is under their lips. Selah.English Standard Version
They make their tongue sharp as a serpent's, and under their lips is the venom of asps. SelahNew International Version
They make their tongues as sharp as a serpent's; the poison of vipers is on their lips. Selah