Acceptance is a requirement for a correct understanding. Someone who rejects the Bible will see two passages and say: Look! A contradiction, see I am right!
Someone who accepts the Bible will see the same two passages, and say: That's interesting. Are there other passages or an explanation that will reconcile them?
Your statement is based on the presumption that non-Christian Biblical scholars study the Bible in order to disprove it. Some might, but others would simply approach it like a historian might approach any other historical document. You're assuming that every non-Christian has an axe to grind with the Bible.
Someone who accepts the Bible will see the same two passages, and say: That's interesting. Are there other passages or an explanation that will reconcile them?
A non-Christian Biblical scholar can do the same.