If you’ve ever struggled with that issue, I hope you’ll take the time to listen to the talk John Piper gave at the recent Resurgence Conference in Seattle. You can listen here or download the mp3 here. As is typical of him, Piper is very thoughtful and free from the superficial kind of answers you sometimes get from those addressing issues like these.
Piper’s notes are also available at this link: Why I Trust the Scriptures. Within these notes are embedded a ton of links to further resources for investigation.
If this is an issue you have questions about, this is a great place to begin getting some intelligent answers.