Time to put away the Christmas decorations!
40 days after His birth, Jesus was presented at the temple (Luke 2:22-36). The church celebrates this event in Jesus's life with the Feast of the Presentation.
It is also the source of beautiful song of Simeon which is a part of our liturgy known as nunc dimittis (Latin for "now dismiss"). Lutherans sing this following the celebration of communion.
Now dismiss Thy servant, O Lord, In peace,
according to Thy word:
For mine own eyes hath seen Thy salvation,
Which Thou hast prepared in the sight of all the peoples,
A light to reveal Thee to the nations
And the glory of Thy people Israel.