I think the main themes of the show peaked in this episode with; Marcus encountering a creature that we had seen before, Paul being infested by another creature and Sue collecting leachers out of one of the same devolving once-human(?) creature and a so-called 'inhuman' android taking direct revenge just like a human would do. With all that is happening, believes and religions are at two sides of a blade. Delusion gets you killed and hope keeps you going and the truth to it, is much more complicated. After all, it is a giant and unknown world/nature out there and not just humans, but all other 'living things' experience the tragedy of existing; knowing so little of the reality and trying to find their ways with knowing so little and try to make sense of their take on reality and try to make it work. During that, each comes up with an idea to wish what they lack the most from a higher power.
"What is the difference between the god and some alien transmission from out there?"
"What is the difference between the god and some alien transmission from out there?"