Cardinal Gerhard Müller, former prefect of the Vatican’s Congregation for the Doctrine of the Faith, has strongly criticized the display of rainbow flags in Catholic churches, asserting that they represent an atheistic ideology that denies God as Creator.
In a November 2025 interview, Müller stated: “We cannot have rainbow flags in our churches because behind this is the atheistic ideology, absolute negation of God as the Creator.” He argued that such symbols promote a worldview incompatible with Christian anthropology, which views human sexuality as ordered by divine design. The cardinal emphasized fidelity to Jesus Christ over modern ideologies, warning against adopting “new gods” that relativize Church teaching on marriage and family.
Müller’s remarks echo his longstanding opposition to what he sees as ideological infiltration in the Church, including critiques of Germany’s Synodal Way and certain LGBTQ+ initiatives. He insists that while individuals must be welcomed with compassion, the Church cannot endorse ideologies contradicting revelation.
Supporters praise Müller for defending doctrinal clarity amid cultural pressures, viewing his words as a call to resist secular influences eroding faith foundations. Critics, however, argue his language risks alienating marginalized Catholics and overlooks pastoral needs in a diverse world.
As debates over inclusion and tradition persist in global Catholicism, Müller’s intervention highlights tensions between orthodoxy and contemporary expressions of welcome. His voice remains influential among conservatives seeking to safeguard the Church’s core beliefs.
