The assertion was that God had not told Adam and Eve the truth. By eating the fruit of that tree, Eve would supposedly become like God, having the authority to decide what was good and what was bad.
(‏ تكوين ٣ :‏ ​ ١ -‏ ٥‏ )‏ فقد ادّعى هذا الملاك ان ما قاله الله لآدم وحواء ليس صحيحا وأن حواء ستصبح كالله ،‏ لها الحق ان تقرر ما هو صواب وما هو خطأ ،‏ في حال اكلت من ثمر الشجرة .‏