You do not have to feel qualified to be used by God. Jesus gave authority to ordinary, still-learning people and sent them out to make disciples, and He is still doing the same today. Every Christian is a disciple in the making, and that is exactly who Jesus calls into the mission. The difference between those who are actively engaged and those who are not is not competence or calling. It is priority and willingness. Following Jesus was never meant to be a spectator experience. He sent His disciples out anyway, knowing the mission would be costly, and He is sending us out too.