While there are some parts of the Scriptures that are difficult to understand (2 Peter 3:16), this is not the case with everything we find in the Bible. In fact, the apostle Paul explicitly states in Ephesians 3:4 that “when you read this, you can perceive my insight into the mystery of Christ.”
Where the Problem Lies
Many times, our questions and doubts can be answered simply by reading and believing what the Bible has to say on the matter. Thus, the problem of unbelief resides not in the intellect but rather in the will.
This is why Jesus says, “‘for the heart of this people has become dull, with their ears they scarcely hear, and they have closed their eyes, otherwise they would see with their eyes, hear with their ears, and understand with their heart and return, and I would heal them'” (Matthew 13:15, NASB). Instead of using their ears and eyes to fulfill the God-given purpose for which they were created, they “scarcely hear, and they have closed their eyes.”
The Real Reason Many Don’t Have Faith
Many do not believe simply because they do not want to.
This is exactly why Jesus, as he overlooked the City of David, exclaimed with great sadness, “O Jerusalem, Jerusalem, the one who kills the prophets and stones those who are sent to her! How often I wanted to gather your children together, as a hen gathers her brood under her wings, but you were not willing!” (Luke 13:34, NASB)