An-Najm 53:30

Thalika mablaghuhum mina alAAilmiinna rabbaka huwa aAAlamu biman dalla AAan sabeelihiwahuwa aAAlamu bimani ihtada

That is their sum of knowledge. Indeed, your Lord is most knowing of who strays from His way, and He is most knowing of who is guided.

That is the limit of their access to knowledge. Indeed only your Lord knows well about the one who has gone astray from his way, and He knows well about the one who has adopted the right path.