If you care for Moses comparisons (and I do, and don't think the similarities are coincidental; they're also far better than the Jesus comparisons...), the Kal-El persona of Superman is most closely associated with the child of Hebrew slaves set adrift to escape doom, the Clark Kent persona matches up most with the adopted Egyptian prince, and Superman correlates most with Moses' life as a prophet.

Is this a perfect analogy? Of course not. Few people would equate living in rural America with anything princely, and Superman didn't come back to save the people of Krypton from their fate. But his identity as the Last Son of Krypton is one that shouldn't be overlooked as a minor aspect of the character.