The General Instruction of the Roman Missal (GIRM), the official document governing the celebration of Mass, states that:
65. The Homily is part of the Liturgy and is strongly recommended, for it is necessary for the nurturing of the Christian life. It should be an exposition of some aspect of the readings from Sacred Scripture or of another text from the Ordinary or from the Proper of the Mass of the day and should take into account both the mystery being celebrated and the particular needs of the listeners.
Contemporary Protestant clergy often use the term 'homily' to describe a short sermon, such as one created for a wedding or funeral.7
In colloquial, non-religious, usage, homily often means a sermon concerning a practical matter, a moralizing lecture or admonition, or an inspirational saying or platitude, but sermon is the more appropriate word in these cases.89
Jacobs, Richard M. (October 7, 2012). "Homilies for Sundays and Holidays". Villanova University. Archived from the original on Feb 26, 2023. http://www83.homepage.villanova.edu/richard.jacobs/homilies/homily-sermon.htm ↩
Majewski, James T. (Jul 30, 2020). "Origen of Alexandria—Homily I on Genesis". Catholic Culture. Retrieved 2021-05-10. https://www.catholicculture.org/commentary/origen-alexandria-homily-i-on-genesis/ ↩
"The Paschal Sermon". Orthodox Church in America. Retrieved 2021-05-10. https://www.oca.org/fs/sermons/the-paschal-sermon ↩
"Homily - Examples and Definition of Homily". Literary Devices. 2015-05-07. Retrieved 2021-05-10. https://literarydevices.net/homily/ ↩
"Homily". The Catholic Encyclopedia (1910). http://www.newadvent.org/cathen/07448a.htm ↩
"Homily vs Sermon". 26 January 2018. Retrieved 8 October 2018. http://grammarist.com/usage/homily-vs-sermon/ ↩