Bless Your Door on The Epiphany:

The gospel tells us that the magi found Christ “on entering the house.” The door to your home is a holy threshold. You can bless those who come in and go out by inscribing above the door in chalk the first two numbers of the year + C + M + B + the last two numbers of the year. Tradition tells us that the letters stand for the names of the magi: Caspar, Melchior and Balthasar. Adolph Adam points out that it may also mean “Christus mansionem benedicat” or “May Christ bless this dwelling.” It’s appropriate to bless your door in January—janua means “door” and the first month is the door to the new year.

After inscribing the doorway, say this prayer:

God of Bethlehem and Cana, God of Jordan’s leaping waters, in baptism you bring us into your family. You wed us and embrace us as your beloved. May we fill this place with kindness to one another, with hospitality to guests, and with abundant care for every stranger.  By the gentle light of a star, guide home all who seek you on paths of faith, hope and love. Then we will join the angels in proclaiming your praise: Glory in heaven and peace on earth, now and for ever. Amen.