Charles Ellicott Commentary Acts 2:12

"And they were all amazed, and were perplexed, saying one to another, What meaneth this?" — Acts 2:12 (ASV)

They were all amazed, and were in doubt.—The last word is somewhat stronger in the Greek: “were much perplexed,” as in Luke 24:4. No New Testament writer uses it except St. Luke.

What meaneth this?—Better, What may this mean? The same phrase occurs in Acts 17:18.