15. Insomuch that they brought forth the sick into the streets, and laid them on beds and couches, that at the least the shadow of Peter passing by might overshadow some of them.
16. There came also a multitude out of the cities round about unto Jerusalem, bringing sick folks, and them which were vexed with unclean spirits: and they were healed every one.
There was something about these people. Not only were they in Unity, but the stories of the signs and wonders began to spread and people from far off starting flocking to the street. These folks had such faith that just the shadow of Peter passing by caused them to be healed. It wasn't Peter it was the Spirit that was within him and the faith of the people who came. They came with faith that just his shadow touching was enough, the Holy Spirit honored that faith.
I am reminded of the woman who touched the hem of Jesus' garment and the men who said to Jesus, just command it so, you don't need to physically show up. You see faith is important.