Importance of knowledge in matters of faith

وَمِنَ ٱلنَّاسِ مَن يُجَـٰدِلُ فِى ٱللَّهِ بِغَيْرِ عِلْمٍ وَيَتَّبِعُ كُلَّ شَيْطَـٰنٍ مَّرِيدٍ

And of the people is he who disputes about Allāh without knowledge and follows every rebellious devil.