325 AD – He became known for his piety and acts of charity. While the Arian heresy was rampaging throughout Christendom, he sided with the Catholic party. The arch-heretic, Arius, had taught that Christ is neither equal to nor of one substance with the Father, but merely an intermediary between God and man. To crush this heresy, Emperor Constantine summoned the bishops into solemn conclave in the First Ecumenical Council of Nicea.
343 AD – Died on the 6th of December AD in Myra and was buried in his cathedral church, where a unique relic, called manna, formed in his grave. This liquid substance, said to have healing powers, fostered the growth of devotion to Nicholas. The anniversary of his death became a day of celebration, St. Nicholas Day.