P.U.S.H. = Post Until Something Happens! wrote:

Seeing that the man was showing signs of discouragement, the devil decided to enter the picture by placing thoughts into the man's weary mind "You have been pushing against that rock for a long time, and it hasn't budged. Why kill yourself over this? You are never going to move it." This gave the man the impression that the task was impossible and that he was a failure. These thoughts discouraged and disheartened the man. "Why kill myself over this?" he thought. "I'll just put in my time, giving just the minimum effort and that will be good enough." And that is what he planned to do until one day he decided to make it a matter of prayer and take his troubled thoughts to the Lord.

"Lord" he said, "I have labored long and hard in your service, putting all my strength to do that which you have asked. Yet, after all this time, I have not even budged that rock by half a millimeter. What is wrong? Why am I failing?"

The Lord responded compassionately, "My friend, when I asked you to serve me and you accepted, I told you that your task was to push against the rock with all your strength, which you have done. Never once did I mention to you that I expected you to move it. Your task was to push. And now you come to me, with your strength spent, thinking that you have failed. But, is that really so?

Look at yourself. Your arms are strong and muscled, your back sinewy and brown, your hands are callused from constant pressure, and your legs have become massive and hard. Through opposition you have grown much and your abilities now surpass that which you used to have. Yet you haven't moved the rock. But your calling was to be obedient and to push and to exercise your faith and trust in My wisdom. This you have done. I, my friend, will now move the rock."