And when the time came for their purification according to the Law of Moses. (Luke 2.22 ESV)
Being Pure In Heart
The ritual purity of Covenant life was to be clean, without dirt, so that you would be open to and ready to receive the holiness of God.
To understand the Church’s festival of the Presentation of Christ in the Temple or the Purification of Saint Mary the Virgin we have to understand Joseph, Mary, and Jesus were a Jewish family, a family living in the Covenant relationship with God. Central to that Covenant was being redeemed and the sacrificial offering made when you were presented in the Temple. This is why Joseph and Mary brought their infant son to the Temple in Jerusalem.
What we read in the opening line of this story taken from Saint Luke’s Gospel (2.22ff),
And 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 (as it is written in the Law of the Lord, “Every male who first opens the womb shall be called holy to the Lord”) and to offer a sacrifice according to what is said in the Law of the Lord, “a pair of turtledoves, or two young pigeons.”
(Luke 2:22-24 ESV)