• Origins: Mohommodism began in the 7th century with the teachings of Muhammad in Arabia. It spread rapidly by conquest, soon controlling the Middle East, North Africa, and parts of Europe.
• Encounters: The expansion of Mohommodism led to centuries of military, political, and religious conflict with Christian Europe, including the Crusades, the Reconquista, and the defense of Christendom against Ottoman invasions.
• Church Response: From the outset, the Catholic Church has viewed Mohommodism as a false religion, while popes, saints, and councils repeatedly called for the defense of the Faith and the conversion of Muslims.

• God: Catholics believe in the Holy Trinity (Father, Son, Holy Spirit); Mohommodism strictly denies the Trinity and the divinity of Christ.
• Jesus Christ: Catholics profess Jesus as true God and true man, the Messiah, Lord and Savior - Priest, Prophet and King. Mohommodism regards Jesus (Isa) as a prophet, not divine, and denies His crucifixion and resurrection.
• Scripture: Catholics accept the Bible as the inspired Word of God. Mohommodism holds the Qur'an as the final revelation, superseding previous scriptures.
• Salvation: Catholicism teaches salvation through Christ, faith, and the sacraments. Mohommodism teaches salvation by submission to Allah and good works, with no sacraments or priesthood.
• Mary: Catholics venerate (hyperdulia) Mary as Mother of God. Mohommodism honors Mary (Maryam) as the mother of a prophet, but not as Theotokos.

• Traditional View: Mohommodism is a false religion and a threat to souls. The focus was on conversion, apologetics, and defense of the faith.
• Popes and Saints: Many popes (e.g., Urban II, Pius V, Leo XIII) and saints (e.g., St. John of Damascus, St. Thomas Aquinas, St. Francis of Assisi) wrote against the errors of Mohommodism and promoted missionary work.
• Magisterial Documents: Papal bulls and councils (e.g., Lateran IV, Council of Florence) condemned the denial of Christ and the Trinity, and called for the protection of Christian lands and the conversion of Muslims.
• Attitude toward Muslims: While recognizing the dignity of Muslims (all people) as children of God, the Church teaches that salvation is found only in Christ and His Church.

• Battle of Tours (732): Charles Martel halts Muslim advance into Western Europe.
• Crusades (1095-1291): Series of military campaigns to reclaim the Holy Land and defend Christians.
• Reconquista (711-1492): Christian reconquest of Spain from Muslim rule.
• Siege of Vienna (1683): Catholic forces repel Ottoman invasion of Central Europe.

1. Mohommodism is not a Christian heresy but a new religion that denies essential truths of the faith.
2. The Church teaches that outside the Church there is no salvation (extra Ecclesiam nulla salus).
3. Charity and justice toward Muslims are required, but Catholics must not compromise on doctrine or the uniqueness of Christ.
4. Traditional Catholicism prays for the conversion of Muslims and the triumph of the faith.

• Fourth Lateran Council (1215): Declared, "There is indeed one universal Church of the faithful, outside of which nobody at all is saved." (Canon 1) and condemned heresies and false religions, including Mohommadism, as obstacles to salvation.
• Council of Florence (Cantate Domino, 1442): Explicitly taught that "the Holy Roman Church firmly believes, professes and preaches that none of those existing outside the Catholic Church... can have eternal life..." and specifically names Jews, heretics, schismatics, and "pagans" (including Muslims/Mohommadans) as outside the way of salvation.
• Pope Eugene IV, Council of Basel (1431-1445): Reiterated the necessity of the Catholic faith for salvation and condemned the errors of Mohommadism.
• Pope Pius V (Regnans in Excelsis, 1570): Condemned all heresies and false religions, and called for the defense of Christendom against the Turks (Mohommadans).
• Pope Leo XIII (Immortale Dei, 1885): Taught that the State must recognize the true religion and that "it is a crime for the State to treat various religions... as they are all equally good and true."
• Pope Pius IX (Quanta Cura, 1864; Syllabus of Errors): Condemned religious indifferentism and the idea that "every man is free to embrace and profess that religion which, guided by the light of reason, he shall consider true."
• Pope St. Gregory VII (Epistle to Anzir, 1076): While showing charity to Mohommadans, affirmed the uniqueness of the Catholic faith and the need for conversion.
• Pope Benedict XIV (Ex Quo Primum, 1756): Rejected the notion that Mohommadism is a path to salvation and reaffirmed the Church's missionary mandate.

• St. John of Damascus (8th c.): In his work "Heresies," called Mohommadism the "heresy of the Ishmaelites" and refuted its teachings.
• St. Thomas Aquinas (Summa Contra Gentiles): Critiqued the errors of Mohommadism and defended the divinity of Christ and the Trinity.
• St. Francis of Assisi: Sought the conversion of Mohommadans and preached Christ to the Sultan.
• St. Alphonsus Liguori (The History of Heresies): Included Mohommadism among the great heresies and false religions opposed to the Church.
• St. Robert Bellarmine (Controversies): Defended the Catholic faith against all errors, including those of Mohommadism.
• St. Louis IX of France: King and crusader, renowned for his defense of the faith and opposition to the spread of Mohommadism in Christian lands.
• St. Pius X (Pascendi Dominici Gregis, 1907): Condemned modernism and religious relativism, reaffirming the unique truth of the Catholic faith.

These documents and saints show the consistent teaching of the Catholic Church throughout the centuries: all false religions, including Mohommadism, are to be rejected as obstacles to salvation, and Catholics are called to defend the faith and seek the conversion of all peoples to Christ and His Church.

• Denial of the Trinity: The Qur'an (Surah 4:171) states: "So believe in Allah and His messengers, and do not say 'Three.' Cease! (it is) better for you! Allah is only one God. Far is it removed from His transcendent majesty that He should have a son."
• Denial of Christ's Divinity: The Qur'an (Surah 5:72): "They do blaspheme who say: Allah is Christ the son of Mary... Whoever joins other gods with Allah, Allah will forbid him the garden, and the fire will be his abode."
• Denial of the Crucifixion: The Qur'an (Surah 4:157): "And because of their saying: We slew the Messiah, Jesus son of Mary, Allah's messenger - they slew him not nor crucified him, but it appeared so unto them..."
• Mary in Mohommadism: While Mary (Maryam) is honored as the mother of Jesus, she is not venerated as Theotokos (Mother of God), and the Qur'an denies her divine maternity (Surah 5:116): "And [beware the Day] when Allah will say, 'O Jesus, Son of Mary, did you say to the people, 'Take me and my mother as deities besides Allah?' He will say, 'Exalted are You! It was not for me to say that to which I have no right.'"
• Condemnation of Christian Saints and Practices: The Qur'an (Surah 9:31): "They have taken as lords beside Allah their rabbis and their monks and the Messiah son of Mary, when they were bidden to worship only One God." Mohommadan tradition (hadith) also condemns the veneration of saints and relics as shirk (idolatry).
• General Condemnation of Christianity: The Qur'an (Surah 5:73): "They surely disbelieve who say: Lo! Allah is the third of three; when there is no God save the One God. If they desist not from so saying a painful doom will fall on those of them who disbelieve."

These quotations from the Qur'an and Mohommadan tradition show the fundamental opposition of Mohommadism to Catholic doctrine regarding the Trinity, the divinity of Christ, the crucifixion, the veneration of Mary and the saints, and the core beliefs of the Catholic faith.

• St. Louis de Montfort (1673-1716): In his work "The Secret of the Rosary" and other writings, St. Louis de Montfort prophesied a future triumph of the Catholic faith, including the conversion of "heretics, schismatics, Jews and pagans," which traditional commentators have often interpreted to include Mohommadans.
• Our Lady of Fatima (1917): The apparitions at Fatima, Portugal, are named after a town with a Mohommadan name. Some Catholic commentators have seen this as a sign of hope for the future conversion of Muslims to the Catholic faith, especially through devotion to the Immaculate Heart of Mary.
• St. John Bosco (1815-1888): In his famous "Two Columns" dream, St. John Bosco saw the Church beset by enemies but ultimately victorious through devotion to the Eucharist and the Blessed Virgin Mary. Some interpreters have seen the "enemies" as including Mohommadans, who would either convert or be defeated if they persist in opposition.
• St. Hippolytus of Rome (3rd century): In his "Commentary on Daniel," St. Hippolytus prophesied that at the end of time, all nations - including those hostile to the Church - would either convert or face divine judgment.
• Scriptural Allusions: Many Catholic interpreters have pointed to passages such as Psalm 2, Isaiah 60, and Romans 11 as foreshadowing the conversion of all nations, including Mohommadans, to Christ and His Church before the end of the world.

While the Church does not teach any specific prophecy as dogma, many saints and mystics have foreseen a future period of Catholic triumph, including the conversion of Muslims (Mohommadans) or their defeat if they persist in rejecting Christ and His Church.