Some Christians believe that everyone in the OT prior to Jesus went to Hell b/c they weren't Christians (kinda by definition.) The Bible, however, doesn't teach that. Quite the contrary, Acts 17:30 states that God overlooked even the ignorance of the Pagan Greeks prior to the days of Christ. If God was willing to overlook the ignorance of OT pagans, why would He condemn Moses to Hell?Book and chapter:verse? I recall that he was not permitted to cross the Jordan River into the Land of Israel and died there, but not that he went to Hell after. I don't think Hell was even introduced until the New Testament.
[Edit]Rude of me to not include the actual verse I referenced, and Acts 17:29 as well for context:
Therefore since we are God's offspring, we should not think that the divine being is like gold or silver or stoneâ€”an image made by man's design and skill. In the past God overlooked such ignorance, but now he commands all people everywhere to repent.