Plutarch in Isis and Osiris relates that this last god was born on the first of the five epagomenal days, as written by Moret, that is to say on the 361st day of the year which corresponds given the reform of the calendar to December 26. Pope Julius I (25th Century) fixed the birth of Christ on December XNUMX; but we know that Christ did not have a Civil Status and that no one knows his date of birth. What could have inspired Pope Julius I for the choice of this date, which is close to that of the birth of Osiris if it is not the Egyptian tradition perpetuated by the Roman calendar?
This becomes evident when we associate the idea of a tree with the birth of Christ: all this would be eminently arbitrary if we did not know that Osiris was also the god of vegetation: he was even sometimes painted in green like the vegetation of which it symbolized rebirth. Its symbol is a tree with cut branches, which was erected to announce the resurrection of plant life. There was therefore a very marked agrarian rite characterizing a sedentary society.