Luke 1:1
Forasmuch as many have taken in hand to set forth in order a declaration of those things which are most surely believed among us,
Cross-reference
Luke 1:3
Historical context
Luke 1:3 explains Luke's own decision to write an orderly account, joining the many who have already written about Jesus.
Acts 1:1–3
Historical context
Acts 1:1-3 refers back to Luke's 'first book' (this gospel), showing continuity of author and subject.
2 Peter 1:16–19
Parallel
2 Peter 1:16-19 emphasizes eyewitness testimony and reliable prophecy — reinforcing Luke's claim of an orderly, verified account.