Let him — God, in whose name thou and other prophets are always threatening us. This was the plain language of their actions; they lived as if they were of this opinion. The Holy One — They scornfully repeated the title usually given by the prophets to God.
Related Commentaries of Isaiah 5:19
Isaiah 5:19
19 That say, Let him make speed, and hasten his work, that we may see it: and let the counsel of the Holy One of Israel draw nigh and come, that we may know it!