Kufr - gulüv relationship in the holy quran

In our study, firstly the concept of 'küfr' was considered by considering the Qur'an's declaration of disbelief. In order to determine the boundaries of the concept of 'küfr', it was tried to determine the relationship between the concepts of 'şirk', 'fısk', 'fucur', 'zulm', 'nifak', 'ma'siyet', 'tuğyan', 'fitne', 'bağy', 'hirâbe' and 'küfr'. The same purpose can be described as the opposite of this concept; The concepts of 'istikamet', 'vasat', 'şükr', 'iman' and 'were also examined. When it comes to the information given in the Qur'an about 'küfr' concept, it is understood that the 'küfr' contains some kind of gulüv and it can cause 'küfr'. The relationship between these two concepts was determined to be bi-directional. In other words, it is seen that 'gulüv' can cause 'küfr' as it is directed to the 'gulüv'. This situation, as it is understood from the historical analysis, shows itself in the Qur'anic stories. For example, Nemrud with his 'küfr' took place in the background of his aggressive behavior against Prophet Abraham. In the thesis, ways of improving 'küfr' and 'gulüv' were also investigated, and the concept of love in Qur'an played a role in preventing extremism and curses. Islam's mediocre religion of 'istikame' and the provision of collective peace and trust are also considered in this context. In addition to these, the teachings of Islam about the aims of prohibiting hatred and hatred and eliminating justice, morality, and injustice were emphasized.