Who started the celebration of Christmas?

Answer 1

In the 4th century CE, Christianity imported the Saturnalia festival hoping to take the pagan masses in with it. Christian leaders succeeded in converting to Christianity large numbers of pagans by promising them that they could continue to celebrate the Saturnalia as Christians.The problem was that there was nothing intrinsically Christian about Saturnalia. To remedy this, these Christian leaders named Saturnalia's concluding day, December 25th, to be Jesus' birthday. Christians had little success, however, refining the practices of Saturnalia. As Stephen Nissenbaum, professor history at the University of Massachussetts, Amherst, writes, "In return for ensuring massive observance of the anniversary of the Savior's birth by assigning it to this resonant date, the Church for its part tacitly agreed to allow the holiday to be celebrated more or less the way it had always been." The earliest Christmas holidays were celebrated by drinking, sexual indulgence, singing naked in the streets (a precursor of modern caroling), etc.