An atheist physicist, Murray Templeton, dies of a heart attack and is greeted by a being of supposedly infinite knowledge.
This being, referred to as the Voice, tells the physicist the nature of his life after death, as a nexus of electromagnetic forces.
The physicist is appalled by the idea of thinking and discovering for no reason but to amuse a being capable of easily out-thinking him with a bit of effort.
The Voice dissuades him by pointing out it is easily within His power to reconstitute Templeton's disembodied form with that method of suicide, whatever it may be, disabled.
Through further inquiry, Templeton discovers that the Voice (in a classic counterargument to the logical regression of the First Cause argument for the existence of God) has no knowledge of his own creation.