Thomas wanted to see the wounds before he believed. Jesus showed up and let him. Honest questions don’t scare God.

A man refuses to take the others’ word for it and asks for evidence, which is the behaviour of somebody taking the claim seriously. In the story he is not rebuked for it. The request is met. Doubt that wants an answer is different from doubt that wants an exit, and only one of them is a problem.

Ask for what you actually need in order to believe something, instead of pretending you are satisfied. Say the specific sticking point out loud to someone who knows more than you. Vague unease stays forever; a specific question can get answered.