As Alan Watts put it with his mischievous sense of humor:
"Science is the art of prediction"
Talking about religion, Christianity used to refer to this, then it lost its way. See eg.
This is still true, to an extent, in the Christian Orthodox world, Pseudo-Dionysius the Areopagite is still reguarded as one of the main “intellectual stars” (so to speak) of the Christian Orthodox thought. As for the “lost way” that you mention, I think that that change started in the West once the Reformartion took off and people wanted to “be sure” that they’ll get to live the eternal life. Here in Eastern Europe people do not think in absolute terms about life after death, as in nobody actually believes you can “earn” your way into Heaven, it all resides in God’s Will which is not possible for us to know. There’s also that New Testament parable of a guy asking Jesus at some point with whom of his wives will he be married in Heaven (the guy had been previously married to a different woman) and Jesus basically answered that that is a stupid question as nobody knows anything about Heaven.
> Jesus basically answered that that is a stupid question as nobody knows anything about Heaven.
Jesus said it was an ignorant question, yes, "You are in error because you do not know the Scriptures or the power of God." But he didn't say nobody knows. He said that she won't be married: "At the resurrection people will neither marry nor be given in marriage; they will be like the angels in heaven" (Matthew 22:29).