But this kind goes not out but by prayer and fasting.
All Commentaries on Matthew 17:21 Go To Matthew 17
Gregory The Dialogist
AD 604
Mor., pref. c. 2: The mustard-seed, unless it be bruised, does not give out its qualities, so if persecution fall upon a holy man, straightway what had seemed weak and contemptible in him is roused into the heat and fervour of virtue.
