“Let them come and tell us what will happen. Tell the former things, so that we may reflect on them and know the outcome. Or announce to us what is coming.
22. Let them bring them forth. Not only does he attack idolaters, but he bids them bring forward the gods themselves along with them; as if he had said, “Whatever may be their ingenuity, they will not be advocates able to defend so bad a cause.” Here we see God sustaining the character of an advocate, and speaking in the name of the whole nation...
The Lord, by the prophet, here repeats the challenge to idolaters to make out the pretentions of their idols: "Produce your cause (Isa 41:21) and make your best of it; bring forth the strongest reasons you have to prove that your idols are gods, and worthy of your adoration." Note, There needs no more to show the absurdity of sin than to produce the reasons...
Commenting on Isaiah 41:21-29
Let them bring them forth,.... Not their reasons, as before, but their gods; let them cause them to come nigh, let them appear in court, and speak for themselves, when their worshippers have said all they can in defence of their deity: and show us what shall happen: what shall come to pass hereafter; and by that prove their divinity; for none but God can...