What happened when Jesus was 8 days old?

He was circumcised according to the law of Moses.

Source: Luke 2:21

Why did Mary give birth in a stable?

Since there were so many people in town for the census there was no other place available.

Source: Luke 2

How did God announce the birth of Jesus?

An angel chorus announced the birth to shepherds around Bethlehem.

Source: Luke 2:10-15

Who picked Jesus name?

God picked his name and told Joseph in a dream..

Source: Matthew 1:20-22

I predicted Jesus birth in Bethlehem many years before it happened. Who am I?

I am the prophet Micah I lived about 700 years before Jesus birth..

Source: Micah 5:2