Can they be trusted, are they valid, unanswered questions don't mean you have to discontinue use. I would mention to learn the history and read the Bible completely through to get an accurate story-line.  (This is something that I think is important when we have questions of our own, as well as when others who don't know as much ask us for guidance. A note is that there will be others who scoff and have disbelief and trust issues and instead of dismissing them and their thoughts, it is good to hear where they are coming from and actually see their point of view first to understand why they said what they did. Sometimes people believe, but are bitter through personal circumstances and events and it might be that you are talking to someone to give them comfort, instead of religion. We all have questions and sometimes it's frustrating when we don't know the answers. I pray you can find wisdom and knowledge within and be blessed from above. All the best in your studies!

Learning not to hate and to forgive others, we die and wait for judgment, salvation is a gift, believe it and ask and receive it. Believe you are forgiven and just pray again if you fall back into sin and live with the victory in your mind!! You are a child of the Most High- be glad and rejoice]!!!