Birth of jesus

Our only sources of information on Jesus' birth are the gospels of Matthew and Luke of the Bible, which provide two different accounts of the nativity. Matthew describes the arrival of the Magi in Bethlehem, when Jesus has already been born. Subsequently, King Herod orders the "Massacre of the Innocents" - the killing of all male children in Bethlehem aged two years and under; the family of Jesus flee to Egypt and return after Herod's death while Jesus is still a child.
This implies that Jesus could have been up to two years old by the time of the massacre, which would have taken place some time, perhaps some years, before the death of Herod in 4 BCE.Luke on the other hand relates the birth to the Census of Quirinius which took place in 6 CE, although also implying that the conception took place during the reign of King Herod.Numerous commentators have attempted to establish the date of birth identify the Star of Bethlehem with some known astronomical or astrological phenomenon.
There are, however, too many possible phenomena to single out one of them with certainty, and none seems to match the Gospel account exactly. Raymond E. Brown, having studied the various astronomical explanations, concluded: "no astronomical record exists of what is described in Matthew". Many scholars regard the star as a literary invention of the author of the Gospel of Matthew, to claim fulfillment of an Old Testament prophecy (Numbers 24:17). Because both Gospel accounts seem to assume that the birth took place some time before the death of Herod, most historians assume that Jesus was probably born around 4 BCE or slightly before.
In the 6th century, Dionysius Exiguus made the birth date of Jesus the basis for his chart of Easter dates. Dionysius' labeled the years since Jesus' birth Anno Domini (meaning "in the year of the Lord" in Latin), which is now abbreviated "AD". Later the abbreviation "BC", which stands for Before Christ was added. Dionysius' estimate is generally thought to be inaccurate; "although scholars generally believe that Christ was born some years before AD 1, the historical evidence is too sketchy to allow a definitive डेटिंग.