Adam Clarke on Acts 17:20

Thou bringest - strange things to our ears - The doctrine of the apostles was different from any they had ever heard: it was wholly spiritual and divine; thus it was strange: it was contrary to their customs and manners; and thus it was strange also. As it spoke much of the exaltation and glory of Jesus Christ, they supposed him to be a setter forth of strange gods: and, therefore, on the authority of the laws, which forbade the introduction of any new deities, or modes of worship, he was called before the Areopagus.