“With Your help I can advance against a troop; with my God I can scale a wall.” When David speaks of advancing against a troop and jumping over a high wall he is using symbolic language.  He implies that by trusting the Lord he could surmount every obstacle and be triumphant in the most depressing circumstances.  The Lord specializes in solving problems that men think impossible.  Take a leap of faith!  True faith sees the invisible, believes the incredible, and receives the impossible.