The lwa are associated with specific Roman Catholic saints. For instance, Azaka, the lwa of agriculture, is associated with Saint Isidore the farmer. Similarly, because he is understood as the "key" to the spirit world, Papa Legba is typically associated with Saint Peter, who is visually depicted holding keys in traditional Roman Catholic imagery. The lwa of love and luxury, Ezili Frida, is associated with Mater Dolorosa. Danbala, who is a serpent, is often equated with Saint Patrick, who is traditionally depicted in a scene with snakes; alternatively he is often associated with Moses. The Marasa, or sacred twins, are typically equated with the twin saints Cosmos and Damian.