St. Faustina Kowalska, virgin (RM)
Old Calendar: St. Placid and His Companions, martyrs
From: Luke 10:13-16
Jesus Condemns Cities For Their Unbelief
(Jesus said,)  "Woe to you, Chorazin! woe to you, Bethsaida! for if the mighty works done in you had been done in Tyre and Sidon, they would have repented long ago, sitting in sackcloth and ashes.  But it shall be more tolerable in the judgment for Tyre and Sidon than for you.  And you, Capernaum, will you be exalted to Heaven? You shall be brought down to Hades.
 "He who hears you hears Me, and he who rejects you rejects Me, and he who rejects Me rejects Him who sent Me."
16. On the evening of the day of His resurrection, our Lord entrusts His Apostles with the mission received from the Father, endowing them with powers similar to His own (John 20:21). Some days later He will confer on Peter the primacy He had already promised him (John 21:15-17). The Pope is the successor of Peter, and the bishops the successor of the Apostles (cf. "Lumen Gentium", 20).
Therefore, "Bishops who teach in communion with the Roman Pontiff are to be revered by all as witnesses of divine and Catholic truth [...]. This loyal submission of the will and intellect must be given, in a special way, to the authentic teaching authority of the Roman Pontiff, even when he does not speak "ex cathedra" (Vatican II, "Lumen Gentium", 25).
Source: "The Navarre Bible: Text and Commentaries". Biblical text taken from the Revised Standard Version and New Vulgate. Commentaries made by members of the Faculty of Theology of the University of Navarre, Spain. Published by Four Courts Press, Kill Lane, Blackrock, Co. Dublin, Ireland. Reprinted with permission from Four Courts Press and Scepter Publishers, the U.S. publisher.