Gnosticism is the ancient foe of Christ. God revealed himself publicly and sent out apostles to publicly preach the good news. Angels publicly announced the birth of the Messiah. God came not to help us escape bodily existence, but to raise our tortured human world into Divine life. That is the message of Christmas forcibly preached by St. Ireneaus. Still, the heresy of gnosticism remains, entrapping human freedom in the tiny prison of our minds aided by secret knowledge and shadowy elites.

The readings for Christmas can be found here:
bible.usccb.org/bible/readings/122521-dawn.cfm