Think of the lack of confidence Jesus ’ disciples must have experienced when they could not heal a demon - possessed boy.
وَقَدْ أَحْضَرْتُهُ إِلَى تَلَامِيذِكَ ،‏ فَلَمْ يَسْتَطِيعُوا أَنْ يَشْفُوهُ » .‏