We have learned that God has servants who existed in certain periods and were united in knowledge, and the call of the messengers before the Messenger of God, may God bless him and grant him peace, was not general, so the people of every era are required to have faith, so all scholars have generalized this statement regarding the monotheism of God, the believer among them, in terms of what he knows about in terms of truthful information. Which benefits knowledge, not from the point of view of faith and the non-believer. Faith is not valid for its existence except after the coming of the Messenger, and the Messenger is not proven until the rational observer knows that there is a God and that God is one. This is necessary because the Messenger is of the same type as those to whom he was sent, so no one of the type is specified without Other than him, except for the absence of opposition, and he is the partner, so he must be aware of the monotheism of the One who sent him, which is G