Pope Leo XIII and Saint Michael the Archangel

(I originally posted this in 2010.  I post it on each September 29, the feast of the Archangels.)

In 1947 Father Domenico Pechenino related what he had witnessed over six decades before.

“I do not remember the exact year. One morning the great Pope Leo XIII had celebrated a Mass and, as usual, was attending a Mass of thanksgiving. Suddenly, we saw him raise his head and stare at something above the celebrant’s head. He was staring motionlessly, without batting an eye. His expression was one of horror and awe; the colour and look on his face changing rapidly. Something unusual and grave was happening in him.

“Finally, as though coming to his senses, he lightly but firmly tapped his hand and rose to his feet. He headed for his private office. His retinue followed anxiously and solicitously, whispering: ‘Holy Father, are you not feeling well? Do you need anything?’ He answered: ‘Nothing, nothing.’ About half an hour later, he called for the Secretary of the Congregation of Rites and, handing him a sheet of paper, requested that it be printed and sent to all the ordinaries around the world. What was that paper? It was the prayer that we recite with the people at the end of every Mass. It is the plea to Mary and the passionate request to the Prince of the heavenly host, (St. Michael: Saint Michael the Archangel, defend us in battle) beseeching God to send Satan back to hell.”

Cardinal Giovanni Batista Nassalli Rocca di Corneiliano wrote in his Pastoral Letters on Lent“the sentence ‘The evil spirits who wander through the world for the ruin of souls’ has a historical explanation that was many times repeated by his private secretary, Monsignor Rinaldo Angeli. Leo XIII truly saw, in a vision, demonic spirits who were congregating on the Eternal City (Rome). The prayer that he asked all the Church to recite was the fruit of that experience. He would recite that prayer with strong, powerful voice: we heard it many a time in the Vatican Basilica. Leo XIII also personally wrote an exorcism that is included in the Roman Ritual. He recommended that bishops and priests read these exorcisms often in their dioceses and parishes. He himself would recite them often throughout the day.”

The Prayer written by the Pope is of course the famous prayer to Saint Michael:

Sancte Michael Archangele,
defende nos in proelio;
contra nequitiam et insidias diaboli esto praesidium.
Imperet illi Deus, supplices deprecamur:
tuque, Princeps militiae Caelestis,
satanam aliosque spiritus malignos,
qui ad perditionem animarum pervagantur in mundo,
divina virtute in infernum detrude.

This is the version I learned as a boy:

Saint Michael, the Archangel, defend us in the battle.  Be our protection against the malice and snares of the Devil.  We humbly beseech God to command him.  And do thou, O Prince of the Heavenly Host, by the powers of God, cast into Hell Satan and all the evil spirits who prowl about the world seeking the ruin of souls.

In 1886 this prayer was added to the prayers that in 1884 Pope Leo had ordered to be said after every low Mass.  In 1964, by Inter oecumenici, the Payer to Saint Michael, along with the other Leonine Prayers after low Masses, were suppressed.  I have always thought that a great pity.  Rest assured that Satan did not cease his activity in 1964, and Pope Leo sought to remind us of that activity and through the prayer to Saint Michael to help guard us against it.   It is still a common prayer in my house.


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  1. Interestingly, since last year’s posting, my local NO parish started this prayer after every Sunday mass. (My EF parish never gave it up, of course). But, it’s done by the congregation alone after the priest leaves the nave. Not sure if there’s some sort of prohibition from the archbishop that we’re working around.
    I started praying this daily over 10 years ago when my adoration partner at the time, (an experienced big city cop), mentioned that he prays for our youth every day, and I decided I should do the same.

  2. ExNOAAman,
    The priests are very careful to make sure the prayer is not seen as part of the Mass. At least that is my take. At daily and the 0730 Sunday Mass, after the last words of the Mass, the celebrant immediately steps down from the altar and then we recite the Prayer to St. Michael the Archangel.
    We’ve been praying it for 18 years at the Mission (founded in 1890). I was in charge of an old fashioned ice cream social on Sunday, September 29th and I asked the priest if we could open the social with the prayer to St. Michael and also if the mission office manager and I could attach a printed version to the Sunday Missal since the younger members of the Mission didn’t know it. In addition to the make your own sundaes, cones, and root beer floats, there were games for the kids and coloring pages of Sts. Michael, Rafael, Gabriel and Guardian Angels (Oct. 2nd).
    Now I notice when visiting other parishes in our diocese it just depends who is the celebrant of that daily Mass.

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