Analysis of information sources in references of the Wikipedia article "Chalking the door" in English language version.
The church has some wonderful Epiphany traditions. In Germany, where I was stationed, it was not unusual to walk past a house and see a chalk inscription that read: "20 ✝ C ✝ M ✝ B ✝ 24." "CMB" stands for Caspar, Melchior and Balthazar, the traditional names of the Magi. "20" and "24" mark the coming year (2024). Others say "CMB" is an abbreviation of a blessing: Christus mansionem benedicat, which is Latin for "May Christ bless this house."