It would be possible to do a whole course just on religion in Star Trek (including, particularly in the original series, the lack of religion in places where we’ve come to expect it).
In addition to encounters with many beings that might be considered “gods,” Star Trek also tackles many difficult issues, such as the question whether Commander Data is a person, or whether, if we let gays marry now, by the 24th century we’ll have to allow Klingons and Trills to marry…