Why arguing with it does not work

When the thought is about God, or about whether you are secretly a disbeliever, the instinct is to settle it. To prove it wrong in your head, right now.

Look at what was given instead. Seek refuge, and desist. Two moves, both short, neither of them a debate.

That is not because the question has no answer. It is because you are not actually being asked a question. You are being handed something designed to be picked up, and the instruction is to put it down.