The suffix “mas” is from the Old English word “maesse,” which means festival, feast day or mass.
So Christmas is Christ-mas, which means the feast day of Christ.
Here’s a reminder to an over-commercialized season and to in-debt-up-to-our-eyebrow Americans what Christ-mas is really about.
A commenter on the video’s YouTube site says the flash mob took place in South Bay Galleria in Redondo Beach, California, and that the singers were members of the Journey of Faith Church, Manhattan Beach.
H/t FOTM’s Joseph and Wild Bill Alaska