John Calvin Commentary Isaiah 47:11

"Therefore shall evil come upon thee; thou shalt not know the dawning thereof: and mischief shall fall upon thee; thou shalt not be able to put it away: and desolation shall come upon thee suddenly, which thou knowest not." — Isaiah 47:11 (ASV)

Therefore shall evil come upon thee. Continuing the subject which he had previously introduced, he ridicules the foolish confidence of the Babylonians, who thought that by the position of the stars they foresaw all events. He therefore says that they will soon be overtaken by that which Scripture threatens generally against all despisers of God (1 Thessalonians 5:3), that, when they shall say, Peace and safety, sudden destruction shall overwhelm them, and that at the dawning of the day they will not know what will be accomplished in the evening; and it is very clear from the book of Daniel that this happened (Daniel 5:30).