When Thomas doubted, Jesus didn’t berate him.
He offered him substantial proof and encouraged him to believe and his faith was strengthened.
We humans see through a glass darkly, and sometimes it’s easy to struggle when what we know is not clear to us. Especially when walking through the valley of the shadow of death.
The thing is, you want to be right. The consequences of being wrong are too great to take the chance with.
Do a biblical word search on two words: Faith and doubt. Then compare what you read to what the author says. Don’t just fall for the way he frames the doubting Thomas story.