"When they saw the courage of Peter and John and realized that they were unschooled, ordinary men, they were astonished and they took note that these men had been with Jesus." NIV translation
This verse holds so much for us and our culture today. In our time, it is thought that you basically are not qualified to do anything important unless you have at least one college degree. In fact, many pastors and religious leaders are not content until they have two or three degrees where they can add letters to the end of their title.
Here we see that because Peter and John were ordinary people, the religious leaders took note. Since they could not give credit to them and their learning, it says that "they took note that these men had been with Jesus". Which do you think brings more glory to God, a bunch of college degrees or being with Jesus? We have been given God's book to study and his Spirit to help us to understand it. Why do we think that we need more?
"But since they could see the man who had been healed standing there with them, there was nothing they could say." NIV translation
After Peter had told the religious leaders all this, there was nothing that they could say because the fact remained that the crippled man had been healed. Peter and John had told them straight out that it was through the power of Jesus' name that it had happened. The man was healed and standing there before them. As they say, case closed.
There is also encouragement in this for us. At those times when those around you are persecuting you and calling you names like 'Jesus freak', do your actions leave them with nothing to say? You see, it is during the difficult times in life, that others get to see your faith and know that it is real.
"So they ordered them to withdraw from the Sanhedrin and then conferred together. 'What are we going to do with these men?' they asked. 'Everybody living in Jerusalem knows they have done an outstanding miracle, and we cannot deny it.'" NIV translation
After hearing Peter and seeing the previously crippled beggar, the religious rulers now have a problem. You see, they wanted to deny that the crippled man was healed but everyone knew that it wouldn't work.
This also is a good lesson for us today. Are your actions such that it is undeniable that you are a follower of Jesus? Are you "walking the talk"?