As a mortal yes he was calling Joseph the man forward, but as an allegory based on Mrs Eddys Glossary, he was bringing forth the higher calling, the higher sense of truth and Love, the real and beautiful. We too can call”Joseph” forward in our hour of need. Whats interesting to me is that he called him forth from a dungeon, most likely because thats where his thoughts were, low. When the Christ message first appeared to humanity, it was in a stable. The Christ idea is not dropped from the sky like some christians believe, it starts with realising, its here now and ever present

“JOSEPH. A corporeal mortal; a higher sense of Truth rebuking mortal belief, or error, and showing the immortality and supremacy of Truth; pure affection blessing its enemies.”