9 Parthians, and Medes, and Elamites, and those who inhabit Mesopotamia, and Judaea, and Cappadocia, Pontus and Asia, 10 both Phrygia and Pamphylia, Egypt, and the parts of Libya which adjoin Cyrene, and the Romans sojourning [here], both Jews and proselytes, 11 Cretans and Arabians, we hear them speaking in our own tongues the great things of God? 12 And they were all amazed and in perplexity, saying one to another, What would this mean?
Matthew Henry's Commentary on Acts 2:9-12
Commentary on Acts 2:5-13
(Read Acts 2:5-13)
The difference in languages which arose at Babel, has much hindered the spread of knowledge and religion. The instruments whom the Lord first employed in spreading the Christian religion, could have made no progress without this gift, which proved that their authority was from God.