Allaah (The Most high) said:
وَعَلَى اللَّهِ قَصْدُ السَّبِيلِ وَمِنْهَا جَائِرٌ
And upon Allah is the responsibility to explain the Straight Path but there are ways that turn aside.’’ [16:9]
[وَعَلَى اللَّهِ قَصْدُ السَّبِيلِ- And upon Allah is the responsibility to explain the Straight Path]: Az-Zujaaj (rahimahullaah) said: It is Allaah who will clarify the straight path and call to it with Hujaj (i.e. clear and overwhelming proofs that defeats all the obstinate and stubborn ones) and Burhaan (i.e. proofs that clarify and distinguish between truth and falsehood in everything).
[وَمِنْهَا جَائِر -but there are ways that turn aside]: Ibn Abbaas (radiyallaahu-anhu) said, ‘’They are the different types of desires (i.e. evil desires). Ibnul Mubaarak (rahimahullaah) said, ‘’They are the (evil) desires and the innovations in religion.’’
[Source: Zaadul Maseer’ by Imaam Ibnul Jawzi (rahimahullaah)]