From “Discipleship and Discipline”, by William H. Hicks, copyright March, 2005:

“Habbakuk 2: 1 offers additional insight into the discipline that disciples must display.  After having questioned God regarding His ‘inaction’ and ‘unresponsiveness’ to the plight of the righteous (Habbakuk 1:2 – 17), the prophet suddenly reverses course and says, “I will stand on my guard post and station myself on the rampart; and I will keep watch to see what He will speak to me, and how I may reply when I am reproved.”  The prophet evokes the imagery of the discipline associated with a soldier on guard duty.  An extra measure of diligence, of alertness and sense of duty is associated with being on guard.  While others in the troop may be at rest or going about their appointed rounds, the guard on duty must be disciplined to sound the alarm at the first sign of danger or threat.  Again, harkening back toIsaiah 50, Habbakuk 2: 1 also notes that a disciple must be disciplined enough to listen well and carefully in order to receive accurately the orders his Master will give or to sustain the weary one with a word.”