Have you ever walked past a door and seen what appears to be random letters and numbers written at the top? These letters and numbers actually have a great significance.

Traditionally on the feast of Epiphany, Catholics bless their homes by writing the letters C, M, and B and the numbers of the year on either side — so this year it would look like “20+C+M+B+26.”

The letters stand for the traditional names of the three Magi: Caspar, Melchior, and Balthasar. They also represent the Latin blessing “Christus mansionem benedicat,” which means “May Christ bless this house.”

Many Catholic parishes will give their parishioners a piece of chalk, a small bottle of holy water, and the words for the house blessing so that each family can bless its home.

Epiphany, which is also known as “Little Christmas,” is the feast that celebrates the arrival of the three Magi who came to worship the child Jesus shortly after his birth. It is traditionally celebrated on Jan. 6. However, the Church in the United States celebrates it on the Sunday between Jan. 2 and Jan. 8. Many around the world celebrate this feast with as much pomp and circumstance as Christmas, including the exchanging of gifts.

The blessing, which is popular in Poland and other Slavic countries, has spread around the world and become increasingly popular in the United States.

How do you bless your home?

Begin by having all family members gather outside the front door. All make the sign of the cross. One person will then read this prayer:

Leader: Peace be to this house.

All: And to all who dwell herein.

Leader: From the east came the Magi to Bethlehem to adore the Lord; and opening their treasures they offered precious gifts: gold for the great King, incense for the true God, and myrrh in symbol of his burial.

(Enter your home and read the Magnificat, the hymn of praise sung by the Blessed Virgin Mary in Luke’s Gospel after being greeted by Elizabeth. During this, sprinkle the area you are in with holy water. After that is complete, pray:)

All: From the east came the Magi to Bethlehem to adore the Lord; and opening their treasures they offered precious gifts: gold for the great King, incense for the true God, and myrrh in symbol of his burial.

Leader: Our Father, who art in heaven, hallowed be thy name. Thy kingdom come, thy will be done on earth as it is in heaven. Give us this day our daily bread, and forgive us our trespasses as we forgive those who trespass against us. And lead us not into temptation,

All: But deliver us from evil.

Leader: All they from Saba shall come

All: Bringing gold and frankincense.

Leader: O Lord, hear my prayer.

All: And let my cry come unto thee.

Leader: Let us pray. O God, who by the guidance of a star didst on this day manifest thine only-begotten Son to the Gentiles, mercifully grant that we who know thee by faith may also attain the vision of thy glorious majesty. Through Christ, Our Lord.

All: Amen.

Leader: Be enlightened, be enlightened, O Jerusalem, for thy light is come, and the glory of the Lord is risen upon thee — Jesus Christ born of the Virgin Mary.

All: And the Gentiles shall walk in thy light and kings in the splendor of thy rising, and the glory of the Lord has risen upon thee.

Leader: Let us pray. Bless, O Lord God almighty, this home, that in it there may be health, purity, the strength of victory, humility, goodness, and mercy, the fulfillment of thy law, the thanksgiving to God the Father and to the Son and to the Holy Spirit. And may this blessing remain upon this home and upon all who dwell herein. Through Christ, Our Lord.

All: Amen.

After the prayers are recited, walk throughout your home sprinkling each room with holy water. Then write the initials of the Magi connected with crosses at the top of your front door. Then the numbers of the year. The numbers will be split so that they are on each side of the initials. You will write:

20 + C + M + B + 26

This is a special tradition at the beginning of each year, a way to invite God into your home and place your family under his protection.

This story was first published Jan. 6, 2022, and was updated Jan. 2, 2026 by CNA.