People frequently respond to questions about their religious beliefs by admitting that they find some aspects of their religion troubling, baffling, or both. Despite that fact they continue to cling to those beliefs, often because they inherited those ideas from others and have been convinced that they must accept them or suffer fearful consequences. Foremost on the list of what many Christians probably find difficult is the church's insistence that non-Christians suffer eternal punishment at the hands of God.
Of course, the church asserts that, because their understanding of the Bible supports eternal punishment, they are not responsible for teaching what even their members may find objectionable. Additionally, the church is never hesitant to suggest that questioning and agonizing over any aspect of church doctrine is a challenge to the sovereignty of God, his Word, His church, and therefore dangerous. To soothe the conscience of those few members who dare to express their concerns about seemingly illogical doctrinal issues the church routinely defers to the idea that we humans cannot understand the mind and actions of a righteous God. Therefore, we needn't worry about seeming inconsistencies and confusion in church doctrine.
Certainly, if anyone is satisfied with this idea of the inscrutability of God, then they are free to dismiss any personal questions on that basis. However, what they cannot reasonably expect is that others must dismiss their questions for the same reason. In effect, the Christian evangelizers want to require that everyone relinquish any personal reservations about their message because God and His ways are beyond human understanding in the base case. Christianity, thus, depends on instructors who are above being questioned.