The dogmatist might walk and talk as if his truths were fit matter for the impartial study of knowledge and its acquisition. Belief in the dogmatist’s Truth is an ongoing commitment to his Truth as if in a wedding vow: in sickness and in health, for richer or for poorer and to forsake all others. Commitment is not epistemic but ethical. And an ethic cannot be refuted, but neither is it true or false.
That Christianity understands itself otherwise is no objection. The questions Christianity poses reveal Christian truths to be a means to an end. Now that you have your truths, then what? What good is truth if not for the salvation of your soul? Truth in Christianity is a rhetorical device to persuade listeners to take up the Christian way of life. Truth is not the highest Good in Christianity, salvation is.
Christianity’s placement of an instrumental value on truth explains in large measure why Christians are especially gullible with respect to their faith: truth seeking means thinking. And there is no way to know beforehand what will come of thinking. Hence, the all too common discouragement of thinking and truth seeking in Christian circles unless the results are known beforehand.