10 Phrygia and Pamphylia, Egypt and the parts of Libya adjoining Cyrene, visitors from Rome, both Jews and proselytes, 11 Cretans and Arabs--we hear them speaking in our own tongues the wonderful works of God." 12 So they were all amazed and perplexed, saying to one another, "Whatever could this mean?"
Matthew Henry's Commentary on Acts 2:10-12
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.