Luke, the writer of the book of Acts, and Theophilus, to whom it is addressed, had been pleasantly associated. From Luke, Theophilus had received much instruction and great light. Luke had been Theophilus’ teacher, and he still felt a responsibility to direct and instruct him, and to sustain and protect him in his work.
 At that time it was customary for a writer to send his manuscript to someone for examination and criticism. Luke chose Theophilus, as a man in whom he had confidence, to perform this important work. He first directs the attention of Theophilus to the record of Christ’s life as given in the book of Luke, which had also been addressed by the same writer to Theophilus. [Acts 1:1-5 quoted.] ... The teachings of Christ were to be preserved in manuscripts and books (Manuscript 40, 1903).