Yes, God does assure us that there are believers destined for heaven in all different groups. The words Islam and Muslim are more than just a name. They are a description of performing total devotion to God alone. The equivalent English word for Islam is Submission, which is practiced by a Submitter to God alone. There are submitters who are Christian, Jewish, Buddhist, Hindu, or from other backgrounds. All submitters who are devoted to God alone without setting up any idols are redeemed by God. Thus, God’s scripture, the Quran, tells us that His devoted worshipers, no matter what they call themselves, will go to heaven.