Paul and Barnabas were called and set apart by the Holy Spirit for the work of the Spirit. They were then sent on their way by the Holy Spirit. All through history, ordinary Christians have been similarly called to go all around the world and share the good news of Jesus Christ. These obedient and humble men and women of God have sacrificially shared the gospel message and lived out the gospel mandate by establishing schools, orphanages, and hospitals while championing social reform, education, and economic development.