Thanks for the responses everyone! @TheTerribleToyman, I’m willing to bet they’ll have a better explanation for that. I took it more like he was confused about being back, and he was trying to make sense of it all, but I had not considered how similar to a Lazarus pit resurrection this was.
@superby1 If they tied his resurrection to the codex, that would be another great connection to Man of Steel. I hope they follow through with that concept.
@moro and @Kon-El, Admittedly, I thought the bells had been rung from Lex in the ship. I thought he was able to call them to Earth, and we see him learning of Steppenwolf and the motherboxes before he is arrested in a deleted scene. The dirt was a great tease, and it made me excited for the next film, but to say it represents hope doesn’t feel like a solid reason to have it in the movie. I would never never considered Superman’s scream as the reason behind Steppenwolf’s return and the awakening of the motherboxes. I also heard the motherboxes will have the literal soul of Steppenwolf’s mother in them, and that’s why he’s always referring to them as mother. I think this would be a nice addition for Steppenwolf’s character.