The series begins with Stephen's perspective at Pentecost to provide a relatable entry point into the story, as the book of Acts features twelve main characters from the start, which would be overwhelming. Stephen's character allows the audience to enter the world of the early believers more gradually and explore thematic elements through his experience, even though the timing of his joining the faith is not specified in the biblical text (Interview with director Paul Syrstad).

Stephen becomes a believer after hearing the apostles, which causes conflict with his mother. She disapproves strongly, ultimately kicking him out of her house and betraying the apostles by leaking information about Peter and the others to the Temple guards (Plugged In review).

Members of the Sanhedrin are depicted as fearful of Jesus' followers. Some are primarily concerned about losing their power, while others worry that if the apostles gain a large following, the Roman Imperium might blame the Jewish leaders, worsening their situation (Plugged In review).

The Roman Imperium is referenced through phrases like 'Praise the Sovereign,' which is an epithet for the Roman rulers. Stephen subverts this by saying 'Pray the Sovereign is overthrown and the Imperium crumbles,' indicating resistance to Roman authority (Plugged In review).

Episode 1 introduces Stephen as the central character through whose eyes the story unfolds. Other key characters include Peter and the apostles, who are the early followers of Jesus. The show also features Mary Magdalene and Saul of Tarsus, though Saul's significant appearances come later. The Sanhedrin members and Stephen's mother also play important roles in the episode's conflict (IMDb cast list; Plugged In review; SurvivorDean blog).