If I question my faith, am I letting God down?

No—and one of the most striking examples in the Gospels involves someone questioning Jesus directly from prison, with no gentle rebuke waiting for him.

John the Baptist, who had already publicly identified Jesus as the Messiah, later sends messengers from prison to ask: "Are you the one who is to come, or should we expect someone else?" (Matthew 11:3). This is real, pointed doubt from someone deeply committed—and Jesus doesn't shame him for it. He simply answers with evidence.

Thomas, doubting the resurrection until he could see for himself, gets a similar response: Jesus meets him personally, invites him to look and touch, and only afterward says, "Because you have seen me, you have believed. Blessed are those who have not seen and yet believe" (John 20:29). Even there, the tone is gentle, not condemning.

Questions aren't the opposite of faith—they're often part of how faith gets tested, refined, and made more genuinely your own rather than inherited secondhand.