From the Gospel of Saint Matthew: Chapter II
Now when Jesus was born in Bethlehem of Judæa in the days of Herod the king, behold, there came Wise men from the east to Jerusalem, saying, “Where is he that is born King of the Jews? for we have seen his star in the east, and are come to worship him.”
When Herod the king had heard these things, he was troubled....
And he sent them to Bethlehem, and said, “Go and search diligently for the young child; and when ye have found him, bring me word again, that I may come and worship him also.”
When they had heard the king, they departed; and lo, the star, which they saw in the east, went before them, till it came and stood over where the young child was....
And being warned of God in a dream that they should not return to Herod, they departed into their own country another way.
Now when they were departed, behold an angel of the Lord appeareth to Joseph in a dream, saying, “Arise and take the young child and his mother, and flee into Egypt, and be thou there until I tell thee: for Herod will seek the young child to destroy him.”
And he arose and took the young child and his mother by night, and departed into Egypt....
Then Herod, when he saw that he was mocked of the Wise men, was exceeding wroth, and sent forth, and slew all the children that were in Bethlehem, and in all the borders thereof, from two years old and under.