This research is based on the basic views and assumptions of the Maturidis in the field of faith, and discusses whether this understanding allows the belief that faith can be handled on an implicit, closed basis. The Maturidis, who regard the belief as the most beautiful and valuable of those that can be reasoned, regard it as a rational necessity to believe in Allah. For them, the basic condition of responsibility is reason, and the truth of faith can only be known through thinking and reasoning. According to the Maturidis, faith is essentially the affirmation of the heart, and primarily it is a heart work. Convinction due to knowledge is an important element of its clarity and precision. Nevertheless, while the Maturidis define the faith as the attitude of the heart and make it enough to make it clear and transparent, it remains a closed space, especially in terms of human beings. The Maturidis are aware of that and they accepted that is necessary to be accompanied by affirmaition of language in order to come to the top of closure which is directed towards man and world. The great majority of the Maturidis prioritize the heart-affirmation and heed the affirmation of language. According to them, faith is reached in terms of the world and the hereafter, to the clearest definition as "affirmation with the heart and affirmation with tongue" that such an understanding does not include a closure and rejects any kind of closure.