"But they who wait for theLord shall renew their strength;
they shall mount up with wingslike eagles;
they shall run and not be weary;
they shall walk and not faint."
Those of us who wait for the Lord to lead and direct us will have our strength renewed. You have to be well-trained for your calling. You need to keep training each and every day to be able to build up the endurance that it will take.
If you start out at a sprinting pace momentum may take you to the finish line, but at some point, you will run out of juice. Remember if you start out like a marathon you are at a much more manageable pace, and can continue for a much longer time. Marathoners train for races and teach their bodies to manage the distance with longevity and speed. If you get tired of running it may be time for you to look to the Lord to renew your strength! Remember your calling is a marathon and not a race!