When Jesus lived on earth, many Jewish leaders did not believe that Jesus was God’s Son. They made fun of Jesus, told lies about Him and tried to trick Him.
But one Jewish leader helped the Christians in Jerusalem. This man was named Gamaliel. He was a Pharisee and a teacher of the law. The other Jewish leaders wanted to kill the apostles. Gamaliel told the leaders (verses 35b, 38b and 39), “…be careful of what you are planning to do to these men. Leave them alone. If their plan is something they thought up, it will fail. But if it is from God, you will not be able to stop them. You might even be fighting against God himself!”
Gamaliel prevented the Jewish leaders from hurting Peter and the other apostles. In this way, Gamaliel served God and helped the church to grow in Jerusalem. Sometimes God uses us to help the church grow. We may not even realize that God is using us. But we need to be obedient and humble and let God speak through us.