Allah is the One who sends messengers. Anyone who rejects a messenger's message is rejected by all messengers. There is no greater sin than rejecting the message of Allah. Therefore, in order to enter heaven, it is necessary to have faith in all messengers. Therefore, everyone needs to have faith in the messengers of Allah, and such faith can not be achieved unless they have faith and obey the last messenger, the Prophet Muhammad (peace be upon him). Allah says in the Bible, "Indeed, whoever disbelieves in any of Allah's messengers is he who disbelieves in Allah and rejects His message." No one can be a believer unless he has faith in all the messengers, says: "Surely those who are against Allah and His messengers, and they want to distinguish between Allah and His messengers, and they say: We believe in some messengers and reject some, and they want to choose a course between that (faith and disbelief).