The Greek verb anadidomi means "to give up," "to hand over," or "to deliver from one to another." It combines ana- (up) + didomi (to give). It appears in Acts 23:33 when soldiers escort Paul to Caesarea and deliver his letter to Governor Felix.
The use of anadidomi in Acts 23:33 reflects the recurring theme in Acts that God uses even secular authority structures to accomplish His purposes. Paul's arrest, which seemed an obstacle to mission, became the vehicle for his testimony before governors and kings — precisely as Jesus had promised (Luke 21:12-13). The letter handed up to Felix was part of God's providential plan to bring the gospel before Caesar's court.