He spoke, not in his own name, but in the name of the One who sent him. That is the example we follow.
(‏ مت ٢١ :‏ ١٣ ؛‏ يو ٦ :‏ ٤٥ ؛‏ ٨ :‏ ١٧‏ )‏ وَهُوَ لَمْ يَتَكَلَّمْ مِنْ عِنْدِهِ ،‏ بَلْ بِٱسْمِ ٱلَّذِي أَرْسَلَهُ .‏