Are the gods of the nations able to prophesy accurately and thus prove that they have supernatural knowledge? If they are, surely there should be some results, either good or bad, to support their claims. In fact, though, idol gods are not able to achieve anything and are as something nonexistent.

23. Why did Jehovah, through his prophets, condemn idols so persistently?

²³ In our day some might wonder why Jehovah, through Isaiah and his fellow prophets, spent so much time condemning the folly of idolatry. The uselessness of man-made idols may seem obvious to many today. However, once a false system of belief has been established and widely accepted, it is hard to root it out of the minds of those who believe it. Many contemporary beliefs are as senseless as the belief that lifeless images are really gods. Yet, people cling to such beliefs despite persuasive arguments against them. It is only by hearing the truth again and again that some are moved to see the wisdom of trusting in Jehovah.

‘Produce and tell to us the things that are going to happen. The first things​—what they were—​do tell, that we may apply our heart and know the future of them. Or cause us to hear even the things that are coming.

Isaiah 41:21-