That speaketh proud things— The Hebrew word גדלות gedoloth signifies great things, or great words; for the more artificial and dissembling a man is, the more he affects a pompous formality in his discourse, that he may the better deceive.
Related Commentaries of Psalms 12:3
Psalms 12:3
3 The LORD shall cut off all flattering lips, and the tongue that speaketh proudb things: