Albert Barnes Commentary Isaiah 5:19

"that say, Let him make speed, let him 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!" — Isaiah 5:19 (ASV)

That say ... - They add one sin to another for “the purpose of defying” God, and provoking him to anger. They pretend that he will not punish sin; and hence, they plunge deeply into it, and defy him to punish them.

Let him make speed - Let him come quickly to punish.

And hasten his work - His punishment.

That we may see it - An expression of defiance. We would like to see him undertake it.

The counsel of the Holy One ... - His threatened purpose to punish. This is the language of all sinners. They plunge deep into sin; they mock at the threats of God; they defy him to do his utmost; they do not believe his declarations. It is difficult to conceive more dreadful and high-handed iniquity than this.