This prophecy surely had its accomplishment, also, when the Scribes and Pharisees sought to entangle Jesus in his talk; Matthew 22:15-22; Luke 20:20.
Related Commentaries of Isaiah 29:20
Isaiah 29:20-21
20 For the terrible one is brought to nought, and the scorner is consumed, and all that watch for iniquity are cut off:
21 That make a man an offender for a word, and lay a snare for him that reproveth in the gate, and turn aside the just for a thing of nought.