Rabanus Maurus, on Matt 2:13

“And after they were departed, behold an angel of the Lord appeared in sleep to Joseph, saying: Arise, and take the child and his mother, and fly into Egypt: and be there until I shall tell thee. For it will come to pass that Herod will seek the child to destroy him.”

“Here Matthew omits the day of purification when the first-born must be presented in the Temple with a lamb, or a pair of turtle doves, or pigeons. Their fear of Herod did not make them bold to transgress the Law, that they should not present the Child in the temple. As soon then as the rumour concerning the Child begins to be spread abroad, the Angel is sent to bid Joseph carry Him into Egypt.”

Imported from an open dataset — not yet checked against the printed edition.