Those mouth speaks vanity - Vain things; things not real and true; falsehood; lies. See the notes at Psalms 24:4. The idea is, that…

Right hand of falsehood.—Most probably with allusion to the custom of raising the right hand in taking an oath.

They swear, but they perjure themselves; they lift up the right hand, but they lie all the while. Rid me, O God, from such men; for, of all enemies…

Whose mouth speaks vanity Vain words, lies, flatteries, and deceit, (Psalms 12:2); when they speak loftily of…

When individuals become eminent for things for which they have had few advantages, they should be more deeply aware that God has been their Teacher…