Does Islam teach that all non-Muslims will go to Hell?
No. Only people who received true and complete information about Islam and rejected it then died in that state will go to Hell. People who never heard about Islam or received only a distorted picture of it will be tested by God. Those who had faith in God and did right will go to Paradise and those who rejected faith in God and did wrong will go to Hell. The Quran says, “Surely those who have faith (in Islam) and the Jews and the Christians and the Sabaeans – whoever believes in God and the Last Day – their reward is with their Lord and they will neither fear nor grieve” (Quran 2:62 and 5:69).