does not warn her children because she delights in controversy. She warns because God has spoken, truth must be guarded, and souls can be harmed by false doctrine.
Vigilance gathers 's own words against error: Sacred Scripture, the Fathers, the Doctors, the Roman Pontiffs, the Councils, and approved Catholic theologians where their witness is needed.
These are not slogans from their sources. Every quotation must be exact, placed within its proper meaning, and verified from an identified Catholic source issued no later than December 31, 1954. A modern archive may preserve the scan, but the original work—not its digital host—is the .
Read slowly.
Read soberly.
Let every warning lead you back to the Catholic truth being defended.
The purpose is not to make the pilgrim suspicious, angry, or fascinated by . It is to form in him a vigilant love of Jesus Christ, fidelity to His , hatred of the falsehood that destroys souls, for those deceived, and perseverance in the Faith until death.
Guard the Deposit
Holy Scripture
Contend for the Faith Once Delivered
“My dearest, taking all care to write unto you of your common salvation, I thought it necessary to write unto you: beseeching you to contend for the faith once delivered to the saints.”
Jude 3Original Rheims New TestamentThe New Testament of Jesus Christ, Translated Faithfully into English, out of the Authentical Latin (Rheims: John Fogny, 1582), original translation with spelling modernized; typographical ampersands expanded and annotation markers omitted.
Keep the Good Thing Entrusted
“Have thou a form of sound words, which thou hast heard of me in faith and in the love of Christ Jesus. Keep the good depositum by the Holy Ghost, which dwelleth in us.”
2 Timothy 1:13–14Original Rheims New TestamentThe New Testament of Jesus Christ, Translated Faithfully into English, out of the Authentical Latin (Rheims: John Fogny, 1582), original translation with spelling modernized; typographical ampersands expanded and annotation markers omitted.
Avoid Profane Novelties
“O Timothee, keep the depositum, avoiding the profane novelties of voices, and oppositions of falsely called knowledge.”
1 Timothy 6:20Original Rheims New TestamentThe New Testament of Jesus Christ, Translated Faithfully into English, out of the Authentical Latin (Rheims: John Fogny, 1582), original translation with spelling modernized; typographical ampersands expanded and annotation markers omitted.
Roman Pontiffs
The Office Entrusted by Christ
“One of the primary obligations assigned by Christ to the office divinely committed to Us of feeding the Lord's flock is that of guarding with the greatest vigilance the deposit of the faith delivered to the saints, rejecting the profane novelties of words and the gainsaying of knowledge falsely so called.”
Pope St. Pius XPascendi Dominici Gregis, opening paragraphLatin original in Acta Sanctae Sedis 40 (1907), pp. 593–650; contemporary English translation in The Programme of Modernism (New York and London: G. P. Putnam's Sons, 1908), pp. 149–150.
Recognize and Reject Error
Holy Scripture
No Other Gospel
“But although we, or an Angel from Heaven, evangelize to you beside that which we have evangelized to you, be he anathema.”
Galatians 1:8Original Rheims New TestamentThe New Testament of Jesus Christ, Translated Faithfully into English, out of the Authentical Latin (Rheims: John Fogny, 1582), original translation with spelling modernized; typographical ampersands expanded and annotation markers omitted.
Do Not Fall from Steadfastness
“You therefore, brethren, fore-knowing, take heed lest led aside by the error of the unwise you fall away from your own steadfastness.”
2 Peter 3:17Original Rheims New TestamentThe New Testament of Jesus Christ, Translated Faithfully into English, out of the Authentical Latin (Rheims: John Fogny, 1582), original translation with spelling modernized; typographical ampersands expanded and annotation markers omitted.
Church Fathers
Error Disguises Itself
“Error, indeed, is never set forth in its naked deformity, lest, being thus exposed, it should at once be detected. But it is craftily decked out in an attractive dress, so as, by its outward form, to make it appear to the inexperienced (ridiculous as the expression may seem) more true than the truth itself.”
St. Irenaeus of LyonsAgainst Heresies, book I, preface, §2Trans. Alexander Roberts and W. H. Rambaut, The Ante-Nicene Fathers, vol. I (Buffalo: Christian Literature Publishing Co., 1885).
Remain in the One Faith
Holy Scripture
Continue in the Doctrine of Christ
“Every one that revolteth, and persisteth not in the doctrine of Christ, hath not God. He that persisteth in the doctrine, the same hath both the Father, and the Son.”
2 John 9Original Rheims New TestamentThe New Testament of Jesus Christ, Translated Faithfully into English, out of the Authentical Latin (Rheims: John Fogny, 1582), original translation with spelling modernized; typographical ampersands expanded and annotation markers omitted.
Apostolic Fathers
Strange Doctrine Is Not Communion
“Do not err, my brethren. If any man follows him that makes a schism in the Church, he shall not inherit the kingdom of God. If any one walks according to a strange opinion, he agrees not with the passion of Christ.”
St. Ignatius of AntiochEpistle to the Philadelphians, chapter 3The Ante-Nicene Fathers, vol. I, ed. Alexander Roberts, James Donaldson, and A. Cleveland Coxe (Buffalo: Christian Literature Publishing Co., 1885).
Church Fathers
The Whole Before the Corrupt Member
“What then will a Catholic Christian do, if a small portion of the Church have cut itself off from the communion of the universal faith? What, surely, but prefer the soundness of the whole body to the unsoundness of a pestilent and corrupt member?”
St. Vincent of LérinsCommonitory, chapter 3, §7Trans. C. A. Heurtley, A Select Library of Nicene and Post-Nicene Fathers, second series, vol. XI (New York: Christian Literature Co., 1894).
Wisdom Refutes Falsehood
Doctors of the Church
The Wise Man Refutes Falsehood
“Now it belongs to the same thing to pursue one contrary and to remove the other: thus medicine which effects health, removes sickness. Hence, just as it belongs to a wise man to meditate and disseminate truth, especially about the first principle, so does it belong to him to refute contrary falsehood.”
St. Thomas AquinasSumma Contra Gentiles, book I, chapter 1English Dominican Fathers, First Book (London: Burns Oates & Washbourne, 1924), pp. 1–3; checked against the Leonine edition, vol. XIII (Rome, 1918).
Modernism and Doctrinal Corruption
Roman Pontiffs
The Axe at the Root
“Moreover, they lay the axe not to the branches and shoots, but to the very root, that is, to the faith and its deepest fibres.”
Pope St. Pius XPascendi Dominici Gregis, introductionLatin original in Acta Sanctae Sedis 40 (1907), pp. 594–596; contemporary English translation in The Programme of Modernism (1908), p. 152.
Nothing Stable or Immutable
“It is thus, Venerable Brethren, that for the Modernists, whether as authors or propagandists, there is to be nothing stable, nothing immutable in the Church.”
Pope St. Pius XPascendi Dominici Gregis, analysis of the evolution of dogmaLatin original in Acta Sanctae Sedis 40 (1907), pp. 593–650; contemporary English translation in The Programme of Modernism (1908), pp. 195–196.
The Synthesis of All Heresies
“And now with Our eyes fixed upon the whole system, no one will be surprised that We should define it to be the synthesis of all heresies.”
Pope St. Pius XPascendi Dominici Gregis, conclusion of the analysis of Modernist teachingLatin original in Acta Sanctae Sedis 40 (1907), pp. 593–650; contemporary English translation in The Programme of Modernism (1908), pp. 214–215.
Continue the Watch
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