Mu’āwiyah ibn Abī Sufyān (رضي الله عنه), narrated that the Messenger of Allāh (صلى الله عليه وسلم) said: “Whoever Allāh wants good for He gives him understanding of the religion.” [Agreed Upon]

Shaykh al-Islām Ibn Taymīyyah (d.728H) has a famous statement: “Ahl al-Sunnah are the most knowledgeable of the people in regards to the truth and the most merciful of the people to the creation.” [Refer to Minhājus-Sunnah (5/158) of Ibn Taymīyyah.]

Imām Ibn al-Qayyim said: “The reasons that prevent (people) from accepting the truth are too many and from them is being ignorant of it. This reason is what prevails over the majority of souls; for indeed the one ignorant of something will show enmity to it and its people.”

Source: Hidāyatul ḥayārā Fee Ajwibatil Yahūd Wan-Nasārā page: 18