We see a terrified young man with a giant handgun hiding in a bathroom.
He's listening to Jules give his Ezekiel speech to Brett. Then Jules shoots Brett. Marvin, the black friend standing in the corner, starts freaking out because two of his friends were killed.
Then our gun wielding bathroom guy pops out and empties his enormous gun at Jules and Vincent.
Bad idea. Every shot misses.
They kill him.
Vincent's not happy with Marvin, who turns out to be their informant, for not mentioning the guy in the bathroom, while Jules is astonished that they're still alive and insists that what they witnessed was a divine intervention.