A deeper question would be if we found intelligent life and they had never heard of a redeemer or a creator.
Such questions got Bruno burned as a heretic. Or Expelled, if you like.
Then you’ve got three options:
1) They’re pagans to be evangelised and converted, or
2) They’re false angels sent, or placed,to deceive, or
3) The whole religion thing is a pile of pants.
I don’t think there’d ever be enough evidence to make me believe option three over the first two. Heck, there’s enough people on this planet who have never heard of a redeemer to not let that fact faze me too much should it pop up in an alien culture.
A far deeper question for you would be if intelligent life was found and they had heard of a creator and a redeemer.