Gambold secured the respect and love of the Brethren composing this General Synod; and was in a position to be of greater service to his community than ever. His work, however, was nearly ended. After the sessions of the Synod were concluded, he returned to London, where he continued to reside till 1768, when he was seized with “a dropsical asthma,” from which his sufferings were such, that his friends, who were about him, apprehended that every day would be his last. Hoping to be benefited by the change, he removed to his native air; and, for a time, there were flickering hopes of amended health. Wishing to render himself useful to the Brethren’s Church at Haverfordwest, he exerted his failing energies to the utmost. As far as he was able, he visited the sick, and poor, and tried to comfort them in their distresses. When he could, he preached; his last text being “Set your affections on things above.” When not able to preach in public, he explained the Scriptures in private, and held fellowship with his Christian friends. His work was done; and it only remains to see how the Oxford Methodist, and Moravian Bishop died. In a letter dated October 11, 1770, after stating that his asthma was so relieved that he could now lie down in bed, and obtain a little sleep, he continued:— “I ought to be thankful for every mitigation of pain; but it becomes, I think, plainer than ever, that I have a real attack of the dropsy, which whether I shall get the better of it, or it, by and by, get the better of me, is a question. I totter on my legs, and, though I look pretty well, yet there are few intervals in the day wherein I have anything like strength either of body or mind. However, I set no bounds to my Saviour’s power, if He sees it good to continue me here a little longer; but it is hardly to be any more expected in my case. I really do all I can to support my impaired constitution, and walk, most days, a little in the chapel or burying-ground, till I am ready to drop down. All that I can properly desire of my gracious Lord is, that, He would be merciful to me an unworthy sinner, wash me from all my unfaithfulness and transgressions in His blood, keep me in communion with Himself and His people, help me to behave rightly, at least not offensively, in my sickness, and be perceptibly near to me in my last hour, whenever it is to be.” In another letter, dated July 28, 1771, he wrote:—