“When the time came

For their purification,

According to the law

Of Moses,

They brought him up

To Jerusalem

To present him

To the Lord.”

Καὶ ὅτε ἐπλήσθησαν αἱ ἡμέραι τοῦ καθαρισμοῦ αὐτῶν κατὰ τὸν νόμον Μωϋσέως, ἀνήγαγον αὐτὸν εἰς Ἱεροσόλυμα παραστῆσαι τῷ Κυρίῳ,

Luke said that when the time or the days were completed (Καὶ ὅτε ἐπλήσθησαν αἱ ἡμέραι) for their purification (τοῦ καθαρισμοῦ αὐτῶν), according to the law of Moses (κατὰ τὸν νόμον Μωϋσέως, Joseph and Mary brought Jesus to Jerusalem (ἀνήγαγον αὐτὸν εἰς Ἱεροσόλυμα) to present him to the Lord (παραστῆσαι τῷ Κυρίῳ).  What is this purification and is it different than circumcision.  The story of John did not have this purification ritual.  Strictly speaking, this was a purification of the mother to take place 40 days after the birth of a child that had made her unclean as described in Leviticus, chapter 12:1-8.  The presentation of the child and the father were not part of this purification ritual.  There was no law or custom about the presentation of a child, other than the presentation of the first born as in Exodus, chapter 13:2 and 13:16.  Women were considered unclean after childbirth because of the blood discharge that took place with birthing.  If a male was born, the woman was unclean for 7 days, like menstruation, so that on the 8th day the male child could be circumcised.  There were 33 more days of blood purification for the male child.  During her unclean period, this new mother could not touch any holy thing, or go into the sanctuary.  Thus, the purification ritual took place on the 40^th day, a symbolic number based on the 40 years of the Israelites in the desert wilderness.