The Complete Guide to Holy Rummy 51 Holy Rummy 51 is a variation of the classic card game Rummy, & its origins are firmly rooted in the centuries-old mosaic of card games. Rummy has roots in the early 19th century, & it has evolved into many differummy noblerent forms in many cultures. Both the Chinese game "Mahjong" and the Mexican game "Concentration," which place an emphasis on matching & melding cards, are thought to have influenced the game. Many variations, such as Holy Rummy 51, were created as rummy spread throughout continents & adjusted to local tastes and customs. The particular variation, called Holy Rummy 51, is believed to have become more well-liked in the middle of the 20th century, especially at social and religious events.