This is the Feast of the Presentation of Our Lord in the Temple. 40 days after Christmas.

The time came for Mary and Joseph to do what the Law of Moses says a mother is supposed to do after her baby is born.

They took Jesus to the temple in Jerusalem and presented him to the Lord, just as the Law of the Lord says, “Each first-born baby boy belongs to the Lord.” The Law of the Lord also says that parents have to offer a sacrifice, giving at least a pair of doves or two young pigeons. So that is what Mary and Joseph did.