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""Then how is it that each of us hears them in his own native language? Parthians, Medes and Elamites; residents of Mesopotamia, Judea, and Cappadocia, Pontus and Asia, Phrygia and Pamphylia, Egypt and the parts of Libya near Cyrene; visitors from Rome (both Jews and converts to Judaism); Cretans and Arabs- we hear them declaring the wonders of God in our own tongues!"" NIV translation
Here the crowd that witnessed the power of the Holy Spirit is described. People from all over were in Jerusalem and they were able to hear the gospel in their own languages. Notice that they did so not through any efforts of man to learn the language but through the power of the Holy Spirit. It seems that today we put much stock in our own efforts to prepare to share the gospel. Many spend years in colleges and receive many degrees but, here, it was common people being used by God. This can be an encouragement to all of us to help us to see that it is not what we know but who we know that gives us the ability to share the gospel.
"Amazed and perplexed, they asked one another, "What does this mean?" Some, however, made fun of them and said, "They have had too much wine."" NIV translation
The crowd is still trying to figure out what is going on. Some are asking questions while others begin to criticize. For us, as Christians, the world should be looking at us in much the same way that this crowd is looking at the early disciples. Do you find people asking you why you are different? If you have the Holy Spirit alive in you, you will be different and those around you will notice. Then, if they cannot understand, they will start to criticize you. In this passage they started to accuse the early disciples of being drunk. This is just the beginning of persecution, as the early church would come to learn. When this persecution comes, rejoice at the fact that you are considered an authentic Christian (Jesus never said it would be easy).
"Then Peter stood up with the Eleven, raised his voice and addressed the crowd: "Fellow Jews and all of you who live in Jerusalem, let me explain this to you; listen carefully to what I say. These men are not drunk, as you suppose. It's only nine in the morning!"" NIV translation
After all the insults, now Peter is getting up and going to share the gospel with this crowd. This is what we must do sometimes as well. We, as Christians, are called not to answer insult with insult but to tell people about the grace and mercy of God. Peter starts by using a bit of logic on the crowd when he says that they are not drunk and it's only nine in the morning. Peter is gently showing the crowd that they are mistaken about what is going on and then he is going to tell them about Jesus. That should be a pattern of evangelism for us as well.