As a matter of intellectual honesty, the use made of Scripture must remain faithful to the original text and intention (inasmuch as these may be retraced). At the point where religious language comes to be fraught with ideology (or vice versa), the emerging discipline of Critical Discourse Analysis may prove useful inasmuch as it (re)places instances of language within their full co-text, con-text and inter-text and seeks to denounce cases of manipulation wherein texts are read according to a system or set of values altogether extraneous to it, or alienated from their original meaning or purpose.
I would like to illustrate this point by means of the case example of George W. Bush's recourse of religious language and categories to justify (notably) U.S. foreign policy and beyond that, to serve his own electoral purposes.