6 But the rumour of this having spread, the multitude came together and were confounded, because each one heard them speaking in his own dialect. 7 And all were amazed and wondered, saying, Behold, are not all these who are speaking Galilaeans? 8 and how do we hear [them] each in our own dialect in which we have been born, 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?
Matthew Henry's Commentary on Acts 2:6-11
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.