In Acts, believers are empowered by the Holy Spirit to bear witness to the good news of Jesus Christ among both Jews and Gentiles, and in doing this they establish the church. In addition to this, Acts explains how Christianity, although it is new, is in reality the one true religion, rooted in God’s promises from the beginning of time. In the ancient world it was important that a religion be shown to have stood the test of time. Thus Luke presents the church as the fulfillment and extension of God’s promises.