Only Allah knows the secret and the moment of Judgment

He alone has knowledge of the Hour (of change): No fruit comes Out of its spathe, no female conceives or gives birth, but He has knowledge of it. The day He will call them (and ask): "Where are the compeers (you ascribed to Me)?" They will answer: "We profess to You not one of us can vouch for them."

And those they used to worship will leave them in the lurch, and they will realise there is no escape for them.