He had been worshiped as God, raised infinitely above the highest archangel. His infinite power and wisdom were no longer put forth so fully and so palpably to promote his own happiness and comfort, to protect Himself from His enemies, and to advance His own purposes: He became frail, and helpless, and dependent. The meanest could insult and the meanest could injure Him. He had once been placed far beyond the reach of sorrow and suffering; now He was liable to misery and death,–and He did suffer and die. Once the highest of created beings could not approach Him without the profoundest adoration and reverence; afterward the lowest of menials and the most abject slave might, and did, spit upon Him, and buffet Him.1
In addition to this volume of Sermons, Cunningham also left us several very fine volumes on historical and Reformational theology. You should definitely check out this small work, this important historical work, and this masterpiece”. No library would be complete without them.
 William Cunningham Sermons from 1828 to 1860(Edinburgh: T & T Clark, 1872) p. 106