Why Does The Bible Timeline show
Birth of Christ as 4 BC?
The original year calculated by
Dionysius Exiguus
was incorrect although close. Matthew and Luke both place
Christ's birth just before the death of Herod the Great.
Herod's death ocurred shortly after a lunar eclipse.
Scholars assume this is the eclipse in March of 4BC putting
Christ's birth that year. However Christ's birth could have been
up to two years earlier since Herod also ordered the death of the
innocents aged two and under based on information he received from the
Magi.
Ussher was aware of the information regarding Herod. He placed Christ's birth 4 years earlier than the Christian calendar of 1
AD (Anno Domini or year of our lord) making it 4 BC.