Today is the Feast of the Presentation, remembering the presentation of Jesus in the temple, according to the Law of Moses.
The incident is recorded in Luke 2:22-40. This is the prayer from the Book of Common Prayer:
Almighty and everliving God, we humbly pray that, as your only-begotten Son was this day presented in the temple, so we may be presented to you with pure and clean hearts by Jesus Christ our Lord; who lives and reigns with you and the Holy Spirit, one God, now and for ever. Amen.