Luke 2:2
(And this taxing was first made when Cyrenius was governor of Syria.)
Cross-reference
Luke 3:1
Parallel
Luke 3:1 provides another historical dating (Tiberius, Pilate) — similar to the census dating, both anchoring events in Roman chronology.
Acts 5:37
Historical context
Acts 5:37 explicitly references the census under Quirinius — the same historical event Luke 2:2 dates, connecting Jesus' birth to later rebellion.