He asked what the God-given mechanism was whereby we learn about the world from birth to death.
A few things to consider:
-An infant cannot read the Bible
-If our senses and intellects are just secular tools that mostly lead us wrongly, then how do non-believing scientists successfully map the human genome, calculate rocket trajectories, or build bridges? By separating human intellect from God, this view accidentally agrees with the atheist that the human mind can operate completely independently of Christ.
Our senses and intellect are not broken accidents, they were designed by the Logos to read the orderly principles He embedded into the cosmos. While the Fall darkened our spiritual perception, it did not destroy our mind's physical mechanism, which is why we can still trust our faculties to learn about God's creation.