Given the strengths and weaknesses of human nature, every
day is a spiritual combat between our good intentions and our evil
temptations. One of the most subtle of those temptations is to
underestimate this struggle, supposing that a spiritual battle is less
real than a physical battle. The fact is, while earthly warfare requires
a full exercise of the natural virtues, the spiritual battle is even
more intense, with consequences that extend beyond the limits of time
and space. “For our struggle is not against flesh and blood, but against
the rulers, against the powers, against the world forces of this
darkness, against the spiritual forces of wickedness in the heavenly
places” (Ephesians 6:12).