The Census of Quirinius was a census of the Roman province of Judaea taken in 6 CE, upon its formation, by the governor of Roman Syria, Publius Sulpicius Quirinius. The census triggered a revolt of Jewish extremists (called Zealots) led by Judas of Galilee.
The Gospel of Luke uses the census to date the birth of Jesus, which the Gospel of Matthew places in the time of Herod the Great (who died between 5 BCE and 1 CE). Most critical scholars acknowledge that Luke is in error, while some religious scholars have attempted to defend the gospel, sometimes invoking unproven claims.