What makes mediums (Anointing Water, Handkerchiefs, aprons, stickers and wristbands) used to pray for people work, is the spirit in the man or woman of God it comes from. Job 32:8 But there is a spirit in man, And the breath of the Almighty gives him understanding.
Because Paul had gifts to perform miracles and wonders, things that he touched could heal people in his absence. Acts 19:11-12 God gave Paul the power to perform unusual miracles. When handkerchiefs or aprons that had merely touched his skin were placed on sick people, they were healed of their diseases, and evil spirits were expelled.
Elisha’s bones raised a man from the dead. He was already dead yet his bones could raise a man who was dead just by having contact with them. 2 Kings 13:21 Once when some Israelites were burying a man, they spied a band of these raiders. So they hastily threw the corpse into the tomb of Elisha and fled. But as soon as the body touched Elisha’s bones, the dead man revived and jumped to his feet!
As a ministry grows, it becomes difficult for the pastor to pray for each and every person but through the mediums, they are able help God’s people wherever they are.