A curious mind is a sign of intelligence. One of the keys to discovering truth is to ask questions. Questioning anything will lead you closer to its truth, so long as you are honest and prepared to challenge your biases.
It takes real courage, but I encourage you to follow the evidence, wherever it leads.
If you never ask questions, you will never find the answers.
Never be afraid of doubt. Doubts about your faith are a sign that something is out of place. Something does not fit. By seeking to correct it you should arrive at a more robust world view. There is no harm in asking questions. What you find out may well lead you to a greater understanding.
If there are difficult questions burning in your mind, but you are afraid to ask them, then those are exactly the questions you must ask. Would you rather a difficult truth, or a comforting lie?
Below are some of my own questions, including some from when I was still a Christadelphian, and seeking a better understanding of the truth. You may find these thought-provoking. If you have questions of your own, I urge you to seek out the answers. If anyone tells you not to question, or even criticizes you for questioning, then ask them what they are afraid of. If they don't know the answers, look elsewhere.