Martha and Jonathan find a baby in an ark. There is no note with him, but they see how tenderly he was swaddled, how desperately sent here, and they look at each other and they know. She was on the Kindertransport. He lost his parents to the camps. Martha's eyes say "He is like us." Her voice says, "Moses in the bullrushes."
They take him home. They give him the Hebrew name Kal-El and the American name Clark so he will fit in. They know what it is to be different. There is no Hebrew school in Smallville so they teach him at home, and study Torah together. When he shows special abilities, they wonder to each other if he is the Moshiach. Not for the strength of his body, but for the strength of his kindness. He always seems to be helping others, delivering them from harm, as he was delivered to them. They never tell him this, but they teach him about the obligations without measure. He's a natural.
At school, he is side-eyed for being different. When he displays eccentricities, the villagers shrug and say "maybe it's a Jewish thing." The Kents make sure he values his education, and is always home for Shabbas dinner.
His is bar-mitzva'd at the nearest shul, a few towns over. They didn't know his birthday, so they chose one near Parshat Shemot. Now they worry that was too on-the-nose, but he gives a moving d'var about the obligation to speak truth to power.
As he comes into his own and tries to be a hero, he hides his identity from the public, not out of shame, but to keep his adopted parents safe. They've been persecuted enough.
When he moves to the big city for a job at a newspaper, Pa is so proud he cries. Clark uses his journalistic skills to expose corruption, give voice to the neglected and oppressed, and research his own origins. When he learns the truth about Krypton and his birth parents' desperate bid to send him to safety, Ma and Pa are not at all surprised that they were right.
When Clark brings Lois home, he assures his parents she is a nice Jewish girl, but they're just glad she's a mensch. They step on a glass to remember the destruction of Krypton, and stand under a chuppah quilted by Ma.
A white billionaire spews lies about him, trying to spread fear of the stranger in their midst. He comes out in public and says "There's nothing more American than being an immigrant."
When the government turns against immigrants, he stands on the side of the protestors and protects. Tear gass does nothing to him. He makes himself a shield. He writes article after article in the Daily Planet, making sure the public knows what their government is doing, that immigrants know their rights, that the powerful are put on notice. When they start rounding people up, he says "Never again."
He shows up at immigrant detention centers, armed with miracles. And says "Let my people go."