Luke 1:1–4: Eyewitness Testimony and Certainty
Luke opens his Gospel not with a story but with a method: eyewitnesses handed the events down, and he traced them carefully and set them in order so a believer could know the certainty of what he had been taught.
Luke 23: Jesus Speaks From the Cross
Luke sets three of Jesus' sayings from the cross against relentless mockery about saving himself. The answer is that Jesus saves by not saving himself.