The apostles had a single purpose as they devoted themselves to prayer. They were joined by some women, including Mary (the mother of Jesus), and they were joined by his brothers.
Another can work miracles. Another can speak what God has revealed. Another can tell the difference between spirits. Another can speak in different kinds of languages. Another can interpret languages.
So what does this mean, brothers and sisters? When you gather, each person has a psalm, doctrine, revelation, another language, or an interpretation. Everything must be done to help each other grow.