Matthew 2:13-15

And after they had gone away, behold, an Angel of the Lord appeared in sleep to Joseph, saying: "Rise up, and take the boy and his mother, and flee into Egypt. And remain there until I tell you. For it will happen that Herod will seek the boy to destroy him." And getting up, he took the boy and his mother by night, and withdrew into Egypt. And he remained there, until the death of Herod, in order to fulfill what was spoken by the Lord through the prophet, saying: "Out of Egypt, I called my son."