It was Christ who chose to give different gifts to his people. He chose some to be apostles. He chose some to speak messages from God. He chose some to tell God's good news to many people. He chose some to take care of his people, and to teach them. He gave all these gifts to help God's people to serve him in different ways. As a result, the church, which is like Christ's body, would become strong. In that way, all of us will become united, like one person. We will all believe in Jesus as the Son of God. We will all know him. We will become like a man who has grown up well. We will be completely as God wants us to be, just like Christ himself.