In the book of Acts Paul states that he saw an impossibly bright light and heard the voice of Christ himself. The blindingly bright light is the Apex of this story; it is because of this that Michelangelo chose to situate this painting on the Western wall with the eastern exposure – so that the lunette situated above The Crucifixion of St. Peter would provide a bright light to illuminate it throughout the day.
In the book of Acts, Paul describes an intensely radiant light and hears the voice of Christ himself. The dazzlingly bright light is the focal point of this narrative; it is due to this that Michelangelo positioned the painting on the Western wall with eastern exposure – so that the lunette above The Crucifixion of St. Peter would supply a constant, illuminating light throughout the day.