In regard to the authority of miracles, skeptics often question why neither the Apostles nor Jesus moved a single mountain. The One who could raise the lifeless and whose command was obeyed by wind and waves, who healed all ailments with a word, and who triumphed over death—He had the power to shift mountains at will and surely would have done so if it had been needed. This miracle-working power was bestowed on the Apostles, as noted in the Acts of the Apostles, yet it was not given for the entertainment of onlookers or the idle. Rather, it was intended for the fulfillment of God's will, and since there was no divine intent to move mountains, they did not pursue such an act.
It is important to clarify that the Apostles and other saints who performed miracles did so not by their own authority, but through the power of God. Miracles were accomplished through their prayers, as only God holds the true might of omnipotence. The Apostles were granted this ability at the onset of their mission, yet they faltered in healing a boy afflicted by demons because, at that moment, their faith in the omnipotent One who endowed them with such power was lacking (Matt. 17:19; Mark 9:28). If James and John had attempted to call down fire on the unwelcoming Samaritans (Luke 9:54), it appears that no fire would have descended, as Jesus pointed out that their miraculous gifts were meant to perform good, not to bring punishment.
This leads to the understanding that all miracles are realized by God, through His direct will or through the intercessions of those who possess notable righteousness and holiness. It is pertinent to mention the subject of miraculous icons here. Some individuals, lacking in understanding, mistakenly believe that the icons themselves enact miracles. This belief is both incorrect and perilous. It is incorrect because icons, as representations of the Savior, the Mother of God, or saints, do not hold the omnipotent power to control nature. It is dangerous because such a belief can lead to the idolatrous worship of icons as if they were divine themselves.
We honor holy icons, and there is no sin in this practice, contrary to the claims of certain sects. However, to believe that it is the icon itself performing miracles through the prayers of the faithful before it, rather than God acting through them, would violate the second commandment given on Sinai. Many miracles occur through the prayers of people—indeed, even those who are sinful—and these happen continuously, yet often go unnoticed. We might overlook the grace of God, mistaking these events for ordinary occurrences. It is typically the public, undeniable miracles that capture our attention. Therefore, the Lord performs these miracles before particularly revered icons, which are thus designated as miraculous, to remind us of His mercy and to draw us closer to Him.