Here's a breakdown:
* "Quel est le bon dieu?" means "What is the good God?" or "What is the right God?"
* "Dieu" refers to God, specifically in a Christian context.
* "Bon" implies a sense of goodness, righteousness, or the "correct" God.
Possible English translations:
* "Which God is the true God?"
* "What is the right God to believe in?"
* "Who is the good God?"
* "What's the true religion?" (this is a broader interpretation)
The phrase suggests a questioning of faith or religious beliefs, perhaps even a sense of doubt or searching. It's not simply asking about the existence of God, but rather about which God is "correct" or "good."
The best translation will depend on the context in which the phrase is used.