Now even while he was praying in this wise a mighty six-winged Seraph, burning with light unspeakable, came flying towards him; and St. Francis saw that the Seraph bore within himself the figure of a cross, and thereon the image of a man crucified.  Two of the six wings of the Seraph were lifted up over the head of the crucified; and two were spread for flying; and two veiled the whole of the body on the cross.