Yet if his unbelief was the cause ... why does He blame the disciples? Signifying, that even without persons to bring the sick in faith, they might in many instances work a cure.
-St. John Chrysostom, Homily 57 on Matthew 17, 4th Century


For as the faith of the person presenting oftentimes availed for receiving the cure, even from inferior ministers; so the power of the doers oftentimes sufficed, even without belief in those who came to work the miracle.
-St. John Chrysostom, Homily 57 on Matthew 17, 4th Century