Bede the Venerable
Catena Aurea · Markusevangelium 11
And when even was come, he went out of the city. And in the morning, as they passed by, they saw the fig tree dried up from the roots. And Peter calling to remembrance saith unto him, Master, behold, the fig tree which thou cursedst is withered away. And Jesus answering saith unto them, Have faith in God. For verily I say unto you, That whosoever shall say unto this mountain, Be thou removed, and be thou cast into the sea; and shall not doubt in his heart, but shall believe that those things which he saith shall come to pass; he shall have whatsoever he saith. Therefore I say unto you, What things soever ye desire, when ye pray, believe that ye receive them, and ye shall have them. And when ye stand praying, forgive, if ye have ought against any: that your Father also which is in heaven may forgive you your trespasses. But if ye do not forgive, neither will your Father which is in heaven forgive your trespasses.
(ubi sup.) Or else, because the devil is often on account of his pride called by the name of a mountain, this mountain, at the command of those who are strong in the faith, is taken up from the earth and cast into the sea, whenever, at the preaching of the word of God by the holy doctors, the unclean spirit is expelled from the hearts of those who are fore-ordained to life, and is allowed to exert the tyranny of his power over the troubled and embittered souls of the faithless. At which time, he rages the more fiercely, the more he grieves at being turned away from hurting the faithful. It goes on: Therefore I say unto you, What things soever ye desire, when ye pray, believe that ye receive them, and ye shall have them.