Sixty Years of Shared Humanity: Nostra Aetate and the Tapestry of Western Sydney

28 October 2025 marked the 60^th anniversary of Nostra Aetate, Vatican II’s Declaration on the Relation of the Church to Non-Christian Religions. This brief but transformative document is the Magna Carta of the Catholic Church’s approach to diverse faiths, urging Catholics towards mutual respect, understanding, and dialogue.

This diamond jubilee offers a vital moment for reflection, particularly for communities in Western Sydney, where the spirit of Nostra Aetate is lived out daily in one of Australia’s most vibrant multicultural and multifaith settings.

Promulgated by Pope Paul VI in 1965, Nostra Aetate initiated a profound and dramatic change in Catholic teaching. For the first time in history, the Church spoke positively about other religions, acknowledging that they contain a “ray of that Truth which enlightens all men [sic]”.

The document’s core message is built on the unity of the human family, tracing all people to a common origin and destiny in God. It affirms that people of all faiths share the same fundamental questions about life, morality, and ultimate mystery.

Key affirmations of the document include:

• The Enduring Bond with Judaism: The Church acknowledges and affirms the eternal validity of God’s covenant with the Jewish people. Furthermore, it firmly declares that actions such as hatred, persecution, and antisemitism fundamentally contradict the spirit and teaching of Christ, and must therefore be explicitly denounced.
• Respect for Eastern Spiritual Paths: The Council views the teachings of faiths like Buddhism and Hinduism with genuine regard. These traditions are valued for their philosophical depth and structured ways of life, which attempt to resolve human anxiety and restlessness through spiritual journeys, meditation, and deep inquiry into the divine.
• Recognising Merit in Islam: The declaration expresses deep respect for Muslims, noting their adherence to the belief in one God, their reverence for the prophet Jesus, and their communal devotion to charity, fasting, and prayer. The document strongly encourages believers from both traditions to look past historical conflicts and collaborate for the global welfare of humanity.

Australian Reflections: A Call to Deeper Dialogue

As the Church celebrates this milestone, the Australian Catholic Bishops Commission for Christian Unity and Inter-Religious Dialogue (BCCUIRD) released its 60^th Anniversary Reflections, underscoring the ongoing relevance of the Declaration in the Australian context.

The BCCUIRD notes that the journey of dialogue is an essential part of the Church’s life, not an optional extra, and outlines the four forms of dialogue that have been developed in Catholic teaching since the Council:

1. Dialogue of Life: Sharing the events of daily life with neighbours of different faiths.
2. Dialogue of Action: Working together on matters of common social concern for the betterment of society.
3. Dialogue of Theological Exchange: Sharing and discussing religious beliefs to better understand one another and identify common ground and differences.
4. Dialogue of Religious Experience: Sharing the treasures of one’s spiritual life, such as prayer and contemplation.

This reflection strongly encourages Australian Catholics to move beyond mere tolerance toward genuine, active engagement, reminding us that dialogue is a vital prerequisite for a harmonious society.

Nostra Aetate’s Relevance for Western Sydney

Western Sydney is home to large populations of Muslims, Hindus, Buddhists, Sikhs, and members of many other faith traditions. Catholic parishes, schools, and workplaces are interwoven with these diverse neighbours. For Catholics in this region, defined by its cultural and religious diversity, Nostra Aetate is not an abstract historical document, but a blueprint for daily life. The relevance and urgency of interfaith relations is captured by the Diocese of Parramatta’s Pastoral Plan, which actively promotes interreligious dialogue as a pathway to mutual understanding, respect, and shared commitment to the common good.

The spirit of Nostra Aetate and the Pastoral Plan empower local Catholics to engage confidently and charitably in:

• Building the common good: Through the dialogue of action, local Catholic agencies and parishioners can collaborate with Muslim, Sikh, and other community groups on social justice issues, charity work, and providing welfare support, demonstrating a shared commitment to human dignity.
• Overcoming suspicion: The document’s explicit rejection of religious prejudice allows Catholics to approach neighbours of other faiths without historical burdens, fostering the Dialogue of Life through everyday friendship, mutual respect, and sharing of community spaces.
• Witnessing to faith: Nostra Aetate ensures that dialogue does not compromise the Church’s mission; rather, it calls Catholics to bear witness to their Christian faith and life while acknowledging and preserving the “good things” found in other traditions. In this way, Catholics can appreciate the seeds of the Word present in all cultures.

On this 60^th anniversary, the challenge remains for every Catholic, especially in Western Sydney, to embrace the Declaration fully. By engaging in dialogue with love, we honour our baptismal call to be instruments of unity and peace, reflecting the profound truth that, while our paths may be diverse, our ultimate destiny is a shared humanity under the one God whom we all, in different ways, seek. Western Sydney is a living testament to the hope that Nostra Aetate planted: a hope for a world where different faiths can not only coexist but co-create a more just and peaceful society.

Ms Kim Chong, Media & Community Liaison, Columban Centre for Christian-Muslim Relations