If enough core theology is adequately justified with these restrictions the minister shpould be able to teach it with confidence. Otherwise, there is no theoretical motivation to hold even these restrictions. For example, there could be basic beliefs that are peculiar to some S under a certain set of circumstances that are not universally experienced. Dabney's universality restriction should not disqualify S's warrant to hold that belief as basic. In fact, Dabney's restrictions make it possible for some belief to satisfy them but still not be justified for some S who has had a particular experience that demotivates the justification of that belief.
Similar things seem to be present in Augustine and Aquinas.
Certianly Plantinga characterizes his approach as Augustinian in some sense. All rights reserved.