He said to them, “Because of your unbelief. For most certainly I tell you, if you have faith as a grain of mustard seed, you will tell this mountain, ‘Move from here to there,’ and it will move; and nothing will be impossible for you.
ExplanationCommentary
Verse 20. See here the efficacy of prayer and fasting! What the apostles could not do, prayer accompanied with fasting can effect. How then can that be genuine religion, which makes fasting an object of ridicule? We see also here that the true Church in her exorcisms follows Scripture, when she uses besides the name of Jesus, many prayers and much fasting to drive out the devils, because these, as well as faith, are here required. B.