John Calvin Commentary Isaiah 36:7

"But if thou say unto me, We trust in Jehovah our God: is not that he, whose high places and whose altars Hezekiah hath taken away, and hath said to Judah and to Jerusalem, Ye shall worship before this altar?" — Isaiah 36:7 (ASV)

And if you shall say to me. Rabshakeh employs an argument that consists of three parts. Either Hezekiah thinks that he has sufficient strength to resist, or he expects assistance from Egypt, or he trusts in God. If he trusts in himself, he is mistaken; for what is he when compared to my king? As to Egypt, it will provide him no assistance, but on the contrary will inflict serious damage. It remains therefore that he expects some assistance from God. But he has thrown down his altars and curtailed his worship; will he not rather be punished on that account? In short, this Rabshakeh takes away from the pious king all assistance, both divine and human.

By this slander Satan attempted not only to wound the heart of the king, so that it might sink under the weight of affliction, but also to make an impression on the impressionable and fickle multitude. This was because previously, in the hearts of many, an attachment to superstition remained, and there was a strong tendency to fall back into this deception. The religion that was ancient, and to which they were long accustomed, had been changed; and, in their opinion, Hezekiah was about to be punished for his own rashness.

Likewise, the Papists in the present day, whenever any adverse event happens to us, maintain that we are punished by God because we have ventured to set aside ancient ceremonies.