Religious overtones or are ancient religious texts the original sci-fi where its adherents a few generations removed never got the memo? Only kinda joking. I too picked up on battlestar, resurrection, the twelve tribes (or colonies?) lords ok Kobol and so on. I think someone told me at some point the original was Mormons in space.
The original show's creator, Glen Larson, was a Mormon - so it tracks that the show incorporated a lot of that theology. Also, one of the main antagonists is Count Iblis, someone who seeks to lead the colonists to follow him, though he is revealed to be essentially a prince of darkness. "Iblis" is the Islamic name for Satan, so another religious element. Even his backstory is similar to the Abrahamic view of the devil, "he [Count Iblis] was previously a Being of Light who fell from grace after using his powers for evil purposes."
Ron Moore's reimagined version of Battlestar includes strong themes of reincarnation and life being a cycle, which also tracks with Moore's past interest in Hinduism and other Eastern religions.
