Because of your unbelief] That is, weaknesse, and much defect in their faith, not an utter want of it: they had very little, as the words following import. If ye have faith] Luke 17:6. He speaks of faith of working miracles. We may have great store of other faith, and yet come short of this. as a grain of mustard-seed] In a small measure, Chap. 13. 32. ye shall say unto this mountain] This is used, to set out the greatest miracle, 1 Corinthians 13:2. No prince with his army could ever remove a mountain: that is more then to lay it plain, which yet is a great work, Zechariah 4:7. nothing shall be unpossible unto you] Nothing that may be needfull for the confirmation of the doctrine taught by you; and to procure authority thereunto.