When C. S. Lewis addressed the Christian life in *Mere Christianity,* he explained the seven virtues: faith, hope, love, prudence, justice, temperance, and fortitude. According to believers across centuries and continents, these seven provide the topography of the spiritual and moral life. Despite their acceptance by some ‘Reformed catholics,’ they have often been seen as a merely Roman tradition. This barrier to acceptance is particularly high for the latter four, termed the ‘cardinal virtues’ and originally articulated by pagan Greek philosophers. Besides the genetic concerns, there is one simple reason the seven virtues—not individually but as a schematic—are under suspicion: they are not explicitly articulated in Scripture. For an evangelical theological prolegomena, the question, ‘Is this biblical?’ must be answered in the affirmative. The seven virtues serve as a test case for different understandings of that criterion ‘biblical.’ This paper will survey those understandings and seek to apply them to the three theologians’ presentation of the virtues: Augustine, Aquinas, and Dutch ‘Further Reformation’ theologian Godefridus Udemans.