Christian, dost thou see them

Christian, dost thou see them
  On the holy ground,
How the powers of darkness
  Compass thee around?
Christian, up and smite them,
  Counting gain but loss;
Smite them by the merit
  Of the holy cross.

Christian, dost thou feel them,
  How they work within,
Striving, tempting, luring,
  Goading into sin?
Christian, never tremble,
  Never be downcast;
Gird thee for the conflict;
  Watch, and pray, and fast.

Christian, dost thou hear them,
  How they speak thee fair?
“Always fast and vigil,
  Always watch and prayer?”
Christian, answer boldly,
  “While I breathe I pray”;
Peace shall follow battle,
  Night shall end in day.