And he said unto them,
This kind can come forth by nothing, but by prayer and fasting.
All Commentaries on Mark 9:29 Go To Mark 9
Clement Of Rome
AD 99
And they bring no help to those over whom they make their adjurations; but they speak with terrible words, and affright people, but do not act with true faith, according to the teaching of our Lord, who hath said: "This kind goeth not out but by fasting and prayer"