Charles Ellicott Commentary Isaiah 66:5

"Hear the word of Jehovah, ye that tremble at his word: Your brethren that hate you, that cast you out for my name`s sake, have said, Let Jehovah be glorified, that we may see your joy; but it is they that shall be put to shame." — Isaiah 66:5 (ASV)

Hear the word of the Lord ... —The prophet turns from the hypocrites to the persecuted remnant. The self-righteous, self-exalting Pharisee repudiates, and, as it were, excommunicates, the true worshippers, and taunts them with their devotion to a God who does not help them. In words which find an echo in Matthew 27:42, they said, Let Jehovah glorify Himself, that we may look on your joy. The prophet adds the doom that shall fall upon the mockers: They, and not those whom they deride, shall be put to shame.