Is the subject creator or christmas?
All things were created by him - that's scriptural.
His birth? - check out when Herod the Great ruled and died. Jesus, according to scripture was born in Herods time, making Herods death the prime time to look at Jesus age at that time.
Also, since 40 seems to be the magical number in scripture, The org says Jesus died at 33 years of age, seeming that he supposedly began his ministry at age 30 and died three years later, however, allowing that Herod wanted the babies two year of age and under killed, then died about 4 BCE, makes Jesus birth back to 6 or 7 bce ( making him 40 when he died) and as the shepherds were still in the fields, it definitely was not the "december" of the year.
Still does not answer the question of his birth --although he did say in Luke to celebrate his death, so it falls to that of the thought that IF Jesus thought his birth was important, he would have said so. Everything else is conjecture.