The LORD shall cut off all flattering lips, and the tongue that speaks proud things:
All Commentaries on Psalms 12:3 Go To Psalms 12
Augustine of Hippo
AD 430
4. "May the Lord destroy all deceitful lips" (ver. 3). He says "all," that no one may suppose himself excepted: as the Apostle says, "Upon every soul of man that doeth evil, of the Jew first, and of the Greek." "The tongue speaking great things:" the proud tongue.