Comparative investigation of heresy; according to Quran and Bible and its solutions based on Quran and Nahj al-Balagha

Heresy is a problem that has engaged many religions. How Islam and divine leaders dealt with this issue and have been able to mention the dangers of heretics to their audience is the subject of this article. Qur'an and Nahj al-Balaghah, which are written collections of divine teachings, have identified the heresies and explained the solutions. In Nahj al-Balaghah, Imam Ali (AS) mentioned heresy as one of the most important religious and social evils and considered it changing God's commandments according to the heart's desires and the soul's whims. This comparative article aims to study the issues caused by heresy and its solutions in the Quran and Nahj al-Balagha. The findings of this research showed that Ahl al-Bayt (PBUH), after the Prophet (PBUH), who were and are the leading expositors and interpreters of religion and the Qur'an, were trying to guide people's beliefs with their explanatory behaviour. This research showed that the main problem of heresy is that it has changed people's beliefs to the extent that it can create a new religion.