De jure objections are arguments of claims to the effect that Christian belief, whether or not true, is at any rate unjustifiable, or rationally unjustified, or irrational, or not intellectually respectable, or contrary to sound morality, or without sufficient evidence, or in some other way rationally unacceptable, not up to snuff from an intellectual point of view.
In religious belief as elsewhere, we must take our chances, recognizing that we could be wrong, dreadfully wrong. There are no guarantees; the religious life is a venture; foolish and debilitating error is a permanent possibility. (If we can be wrong, however, we can also be right.)