John 8:15
Ye judge after the flesh - Because I appear in the form of man, judging from this appearance, ye think I am but a mere man - pay attention to my teaching and miracles, and ye shall then see that nothing less than infinite wisdom and unlimited power could teach and do what I have taught and performed. Our Lord speaks here exactly in the character of an ambassador. Such a person does not bring a second with him to vouch his truth; his credentials from his king ascertain his character: he represents the king' s person. So our Lord represents the Father as bearing witness with him. The miracles which he wrought were the proof from heaven that he was the promised Messiah: these were the great seal of all his pretensions.
