These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Adam Warlock
Faux Symbolism: It's amazing how Marvel got away with publishing a Science Fiction version of The Crucifixion in one of their comics.
The Church of Universal Truth, an evil religious alien organization that Adam battled, also has Christian trappings.
A lot of this was Author Appeal at the time. Jim Starlin is an atheist and was a very strong opponent of organized religion. This would also explain the second sequel to The Infinity Gauntlet called The Infinity Crusade, which had very strong religious overtones that were specifically handled in a negative way. Starlin would later admit he was a little anvilicious in his earlier stories.