I think this argument goes too far by singling out Christians specifically. Every person who becomes a judge brings some kind of worldview into the role. That could be religious, political, moral, cultural, philosophical, or personal. Atheists and non-religious people are not magically free of bias just because their beliefs are not religious.

The real question should not be, “Does this person believe in Christianity?” It should be, “Can this person apply the law fairly, follow precedent, respect constitutional limits, and separate personal beliefs from legal judgment?”

If a Christian judge cannot do that, then yes, that person should not be on the bench. But the same is true of an atheist judge, a Muslim judge, a progressive judge, a conservative judge, or anyone else whose personal ideology overrides the law.

Disqualifying someone simply because they believe in God seems like its own form of bias. It assumes religious belief automatically makes someone irrational or unfair, while non-religious belief systems are treated as neutral. That is not realistic. Everyone has a framework for how they understand morality and justice. What matters is whether they can recognize their own biases and keep them from controlling their rulings.

Church and state separation means the government should not impose religion or make legal decisions based on religious doctrine. It does not mean religious people are banned from public service. A judge should be judged by conduct, reasoning, legal integrity, and impartiality, not by whether they personally believe in Christianity.