XV. This may moderate the wonder in any, why Christ so often upbraided his disciples with, O ye of little faith! yet tells us, that one grain of it, though as little as that of mustard, one of the least of seeds, if true and right, is able to remove mountains. As if he had said, There is no temptation so powerful that it cannot overcome: wherefore those that are captivated by temptations, and remain unsupplied in their spiritual wants, have not this powerful faith: that is the true cause. So necessary was it of old, that Christ did not many mighty works where the people believed not; and though his power wrought wonders in other places, faith opened the way: so that it is hard to say, whether that power by faith, or faith by that power, wrought the cure. Let us call to mind what famous things a little clay and spittle, one touch of the hem of Christ's garment, and a few words out of his mouth, (John, ix. 6; Luke, viii. 47, 48,) did by the force of faith in the patients: "Believe ye that I am able to open your eyes?" (Matt. ix. 28;) "Yea, Lord," say the blind, and see. To the ruler, "only believe;" (Matt. ix. 23;) he did, and his dead daughter recovered life. Again, "If thou canst believe:" I do believe; says the father, help my unbelief: and the evil spirit was chased away, and the child recovered. He said to one, "Go, thy faith hath made thee whole;" (Mark, x. 52; Luke, vii. 48, 50;) and to another, "Thy faith hath saved thee; thy sins are forgiven thee." (Matt. xxi. 21, 22.) And to encourage his disciples to believe, that were admiring how soon his sentence was executed upon the fruitless fig-tree, he tells them, "Verily, if ye have faith, and doubt not, ye shall not only do this, which is done to the fig-tree; but also, if ye shall say unto this mountain, Be thou removed, and cast into the sea, it shall be done: and all things whatsoever ye shall ask in prayer, believing, ye shall receive," (Matt. xviii. 19; Luke, xviii. 27.) This one passage convicts Christendom of gross infidelity; for she prays, and receives not.