It is a very suggestive thought that it is in the Gospel of Mark, which is the Gospel of service, we hear the Master saying to His disciples, "Come ye apart into a desert place, and rest awhile." God wants rested workers. There is an energy that may be tireless and ceaseless, and yet still as the ocean's depth, with the peace of God, which passes all understanding. The two deepest secrets of rest are, first, to be in harmony with the will of God, and, secondly, to trust. "Great peace have they that love Thy law," expresses the first. "Thou will keep him in perfect peace whose mind is stayed on Thee, because he trusteth in Thee," describes the second. There is a good deal in learning to "stay." Sometimes we forget that it literally means to stop. It is a great blessing even to stop all thought, and this is frequently the only way to answer the devil's whirlwind of irritating questions and thoughts, to be absolutely still and refuse to even think, and meet his evil voice with a simple and everlasting "No!" If we will be still God will give us peace.