In Acts chapter 5 things rise to such a point that merely the shadow of Peter has to fall on someone for them to have the possibility of healing (see verse 15). Crowds gathered and pressed in to be part of the action, resembling the times when Jesus moved among the crowds and ministry took place.
An interesting feature of these episodes (both with Jesus and with Peter / the apostles) is that the healing / relief / comfort brought came liberally, seemingly with little head-knowledge interaction or stated belief. And with virtually zero doctrinal formula (except, when Peter did speak, the words 'In the name of Jesus ...').
So where was the repentance on the part of the recipient? Where was their prayer of commitment? In these incidents they seem to be missing.
Instead we see grace simply swiping across people, much as a shadow might swipe over someone as a person passes by. That is enough! God is at work, grace is being marvellously and liberally poured out.
The grace comes first ... things change ... living in a new way (lifestyle changes) hopefully come later (but note it is not guaranteed).
The religious establishment - the guardians of orthodoxy and 'correct' interpretation of scripture - couldn't seem to get their heads round these events. Their reaction was jealousy and (foolish) attempts to curtail.
Foolish because - as we all know - you simply cannot grasp hold of a shadow!