The promise of Allah to Muslims, the believing Jews during the time of Moses and before Jesus, and the believing Jews and Nazarenes who followed Jesus then Prophet Muhammad 9:111-112
9:111 Allah has purchased from the believers their selves and possessions, and for them is Paradise. They fight in the Way of Allah, slay, and are slain. That is a binding promise upon Him in the Torah, the Gospel and the Koran; and who is there that more truthfully fulfills his covenant than Allah? Therefore, rejoice in the bargain you have bargained with Him. That is the mighty winning.
9:112 Those who repent, those who worship Allah and praise (Him); those who journey, those who bow, those who prostrate themselves; those who order righteousness and forbid evil, and those who observe the limits of Allah give glad tidings to the believers.