later he wrote,i have read somewhere (might be donne or bunyan or blake) that the resurrection is a kind of climbing of the hill of zion. i want to express this climbing idea... the hill will be illumined from the right, casting a long shadow across the plain far into the left side of the picture... those resurrecting away in the plain on the left shadow-side of the hill must come round in front of the hill to join those coming from the right sunlit side, so there must be ground to walk on in front of the hill.