Churches (and many Christians) tend to treat believers dealing with doubt as if they are sick. Here’s a prescription of antibiotics. Quarantine yourself, take these pills, and come back when you’re feeling better. How unbiblical is that? Jesus invited Thomas to tangibly face his doubt. Jude says to have mercy on those who doubt.
Contrary to popular belief, doubt is not the antithesis of faith. It’s necessary for faith. It fuels faith. In fact, I would argue that if you never doubt, you haven’t seriously considered the Christian faith. The real issue is not whether it is acceptable to doubt. It’s who we turn to when we doubt.