Isaiah 5:19

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!

That say, Let him make speed, (and) hasten his work - vengeance (). Language of defiance to God. So Lamech's boast of impunity (: cf. ; 2 Peter 3:3).

Let the counsel of the Holy One of Israel draw nigh and come - God's threatened purpose to punish.

That we may know it. They deny all knowledge which is matter of faith, and cannot be demonstrated to the senses