D G Hart, in History and the Christian Historian:

In the end, Christian history is nice work if you can get it.  It would be marvelous if, because of faith or regeneration, Christian historians were able to divine what God was up to in all subjects of research and teaching. But Christain theology says we cannot discern God's hand in that way.  It also reminds us that we need to trust that God is in control of human history even if we cannot always see that control, that God providentially orders and governs human affairs.  No matter how much the historical profession says that history moves from antiquity to modernity, the Bible tells Christians, whether historians or not, that the real direction of history is from the first to the last Adam. Only with a sense of history that culminates in Christ and the establishment of the new heavens and new earth will we finally have a Christian history. (p. 86-87)

Same essay citing Charles Miller

The Christian historian must be one in three and three in one - a professing Christian, a thinking theolgian, and a practicing historian.' (p. 87)

As the saying goes: discuss.

History and the Christian Historian ed. Ronald A Wells, Cambridge, Eerdman's, 1998