6 and the rumour of this having come, the multitude came together, and was confounded, because they were each one hearing them speaking in his proper dialect, 7 and they were all amazed, and did wonder, saying one unto another, 'Lo, are not all these who are speaking Galileans? 8 and how do we hear, each in our proper dialect, in which we were born?
Matthew Henry's Commentary on Acts 2:6-8
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.