Sometime back when I worked in the steel mill, I was a part of a crew of men that worked on changing the motor of a large crane. The work took place over the 200 foot tempering furnace, which created an extremely hard-working environment. The crew worked in 15 minute intervals because of the fatigue caused by the heat and after short periods of rest, we were refreshed, renewed in strength and ready to go again.
Life can have a fatiguing effect on our hearts, just as the heat did on our bodies in the steel mill. The effect is not so much the heat of the day, but the wearing away upon the heart by life‘s struggles. Health, financial, domestic and work issues can bear upon the heart of man causing him to stoop and even fall. But God has promised to be with us, provide comfort to our hearts and the strength that we need.
He giveth power to the faint; and to them that have no might he increaseth strength (Isaiah 40:29)
The power that we need is not in us nor does God couple his power with ours so that the total is enough for us to endure. We must remember that he is our strength. (Psalm 46:1; 81:1)
As long as we continue trying to rise above life and the burdens that it bears upon us, we will continually fall which leads to greater anguish in the soul. But when we rest in him, we gain his strength. Resting in him does not mean a time of leisurely repose for the recovering of strength, but more like how God rested from his work of creation on the seventh day. He was not tired from his labor: his resting was him ceasing from work.
When we rest in Jesus, we cease from our own work—whether physical or soulish— and allow him to do his work in and through us. We give up our strength so that we may gain his strength.
So instead of trying harder to overcome, give up and then look to God so that he may do in you what you are unable to do.
God is our refuge and strength, a very present help in trouble. (Psalms 46:1)
Sing aloud unto God our strength: (Psalm 81:1)