I feel most ministers who claim they've heard God's voice are eating too much pizza before they go to bed at night, and it's really an intestinal disorder, not a revelation.

The line uses earthy humor to express skepticism toward claims of direct, audible divine communication. By attributing “hearing God’s voice” to something as mundane as indigestion from late-night pizza, Falwell (a prominent fundamentalist Baptist leader) frames such experiences as physiological or psychological rather than supernatural. The jab also functions as an intra-religious critique: it implies that some ministers trade in sensational personal revelations instead of grounding their authority in scripture, doctrine, and sober judgment. More broadly, the quip reflects a tension within modern Christianity between charismatic/experiential spirituality and traditions that emphasize biblical sufficiency and caution about private revelations.