The New Testament is a pillar of Western Culture's modern myths of, and superhero blockbusters in particular. The movies are filled with themes of father figures asking lost sons to sacrifice their lives for a greater good, and Superman, possessing near-unlimited power, became the easiest hero to bend around these tropes. Originally conceived by Jewish teenagers Jerry Siegel and Joel Shuster in the 1930s, Superman started as a Moses stand-in, sent from Krypton to Earth down the Nile River of space.
In 1992, when DC Comics decided to kill the character for a publicity stunt, they inadvertently married the culture of comic book death (no profitable character really dies) with the final canonical pieces needed by fans and believers to adapt Superman into a Christ figure. Since then, the movie adaptations have pushed the concept harder and harder. Bryan Singer began Superman Returns with parallels to a post-resurrection Godhead returning to his people to inspire faith. Zack Snyder's 2013 film Man of Steel saw Superman journey across the globe, work as an oil rig worker (carpenter… ish), and gain an empowered reputation as he aged into his 30s. The character went full god, with all the backlash that entails, in 2016’s Batman V. Superman: Dawn of Justice.