The word used for healed in this verse and in the preceding verse are different words. Some have suggested, though without wide acceptance, that whereas the former refers to miraculous healing, the latter indicates healing that Luke did as a physician. It is much more natural to assume that these were both acts of miraculous healing and that the verbs are not to be differentiated in meaning. The tenses of the verbs rendered came and were healed are such as to suggest that this is something that took place over a period of time rather than at one time only. Were healed may be recast as an active expression, “and Paul healed them.”
Quoted with permission from Newman, Barclay M. and Nida, Eugene A. A Handbook on The Acts of the Apostles. (UBS Handbook Series). New York: UBS, 1972. For this and other handbooks for translators see here .
