In the year of salvation 1264, to the end that the faithful might celebrate the institution of so great a Sacrament with a complete festal Office, Urban IV, Bishop of Rome, was moved by his devotion thereto, to put forth a godly ordinance, to the effect that the memory of the said institution should be celebrated by all the faithful on the Thursday next after the Octave Day of Pentecost. This day was chosen in order that we, who from one end of the year to the other do use this Sacrament to our soul's health, might particularly celebrate the institution thereof at that season wherein the Holy Ghost taught the hearts of the disciples to acknowledge the mysteries thereof; for then it was, as we read, that they continued steadfastly in the Apostles' Doctrine and Fellowship, and in the Breaking of the Bread and the Prayers.(Read more.)
From a Sermon by Saint Thomas Aquinas
I'm breaking in with a recent revelation ...
59 minutes ago