I have questions about God that feel almost dangerous to say out loud. Am I allowed to ask them, or is questioning already a failure of faith?

“O LORD, how long shall I cry, and thou wilt not hear! even cry out unto thee of violence, and thou wilt not save! Why dost thou shew me iniquity, and cause me to behold grievance? for spoiling and violence are before me: and there are that raise up strife and contention.”

Habakkuk was a prophet in Judah watching his own nation rot from the inside while a crueler empire gathered on the border. His book opens not with a sermon but with an accusation aimed at God about injustice and delay. That protest was preserved as scripture and read publicly in worship. The community that canonized it clearly did not think hard questions put you outside the faith.

“Now when John had heard in the prison the works of Christ, he sent two of his disciples, And said unto him, Art thou he that should come, or do we look for another?”

John the Baptist had announced Jesus publicly and staked his whole life on him. Then he ended up in Herod's prison, and from that cell he sent friends to ask whether he had backed the wrong man. Jesus does not rebuke the question. He sends back evidence, and then speaks about John more warmly than about anyone else. Doubt from inside a dark room is handled tenderly here.