I found this Scientific American opinion piece to be fun. He's not arguing that some claims are immediately testable but noting that it's possible that they might be someday. So if you like intellectual speculation with a certain to me sense of humor, go for it:
Experimental Tests of Theology
It's understandable why some people prefer not to test their beliefs, but evidence-based science teaches us that reality does not go away when you ignore it
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if extraterrestrials sinned, then multiple Christs should have appeared on these exoplanets to save them, a possibility resented by the Church.” Indeed, this is the latest interpretation of Bruno's heresy. In an attempt to add a scientific tone to the discussion, I noted that astronomers now know that a major fraction of all sunlike stars host habitable Earth-size planets. We can therefore test this theology by asking extraterrestrial civilizations that had sinned whether they witnessed Christ.
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the philosopher Martin Buber noted that the biggest dispute between Christianity and Judaism stems from Christianity’s claim that the Messiah had arrived and will return, whereas Judaism maintains that the Messiah will come in the future for the first time. Why argue? asked Buber; since both sides agree that the Messiah will arrive in the future, let’s wait until that moment and then simply ask the Messiah: have you been here before?
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Experimental Tests of Theology
It's understandable why some people prefer not to test their beliefs, but evidence-based science teaches us that reality does not go away when you ignore it
...
if extraterrestrials sinned, then multiple Christs should have appeared on these exoplanets to save them, a possibility resented by the Church.” Indeed, this is the latest interpretation of Bruno's heresy. In an attempt to add a scientific tone to the discussion, I noted that astronomers now know that a major fraction of all sunlike stars host habitable Earth-size planets. We can therefore test this theology by asking extraterrestrial civilizations that had sinned whether they witnessed Christ.
...
the philosopher Martin Buber noted that the biggest dispute between Christianity and Judaism stems from Christianity’s claim that the Messiah had arrived and will return, whereas Judaism maintains that the Messiah will come in the future for the first time. Why argue? asked Buber; since both sides agree that the Messiah will arrive in the future, let’s wait until that moment and then simply ask the Messiah: have you been here before?
...
