I’ve heard this argument before when debating fundamentalists of any established religion. You can make an argument against the belief in any god by using the mathematical principle of “proof by induction.” As an example let’s take the case of Buddhism. Let’s say you’re debating a Buddhist about the teachings of Buddha.
Base case (statement holds for n=1): You ask the Buddhist whether he accepts Christ as his lord and savior. He will reply “No I don’t.”