" Then the silence was broken by a whisper soft as a feather falling, yet which seemed to fill the whole Temple with sound: 'Follow me now, my father,' said the voice of Se-Osiris, 'for the time is short and we must be back before the morning if we would live to see the Sun of Ra rise again over Egypt.'
Setna turned, and saw beside him the Bai or soul of Se-Osiris - a great bird with golden feathers but with the head of his son.
'I follow,' he forced his lips to answer.... "

― Roger Lancelyn Green , Tales of Ancient Egypt