The festive kindling of the "badnjak" commemorates the fire that—according to Serbian folk tradition—the shepherds of Bethlehem built in the cave where Jesus was born, to warm the Baby Jesus and his mother throughout the night. The "badnjak" may also be seen as a symbol of the cross upon which Christ was crucified, the warmth of its fire symbolizing the salvation which, in the Christian belief, the crucifixion made possible for mankind. Scholars regard the tradition as inherited from the old Slavic religion. They interpret the "badnjak" as an incarnation of the spirit of vegetation, and as a divinity who dies by burning to be reborn, to whom sacrifices and prayers were offered for the fertility of fields, the health and happiness of the family. The burning symbolized sunshine, securing the vitalizing power of the sun in the coming year. Other South Slavic peoples have similar traditions, and the custom that a family brings a log into the house and burns it on Christmas Eve has also been recorded in other parts of Europe.