Restfulness of heart

The great thing we need for progress is restfulness of heart. I do not believe that there is simple restfulness of heart until union with Christ is known, not merely as a doctrine, but as the unalterable bond of affection. You are not only assured of His grace in saving you, but you have found Him so necessary to you that you cannot live without Him; then to find out that you are united to Him is absolute solace and divine restfulness.