From the very first, the young pastor took a firm stand against indulgence in any intoxicating liquor, and spoke his mind most freely, in favor not only of temperance but also of total abstinence. He determined to use his oratorical talents in arousing public sentiment against the drinking habits of his day, and he presided over the first public temperance meeting held in Philadelphia. He went further. He gave notice from his pulpit that he should enter no house where liquors were provided, not even to hold services over the dead. This announcement made a tremendous sensation, and no doubt some thought that the foundations of society were endangered. Soon after this ultimatum, the pastor repaired to a house to conduct services over the dead, and found that liquors were being served. Instantly going out doors, he remained standing in a drenching rain, refusing to officiate, until the corpse had been brought to him. Throughout his long ministry, he continued this work, seeking by sermons, addresses, prayers, the taking of pledges, the assistance of reformed inebriates, the training of young men, and by every other lawful means to promote temperance and total abstinence. Not always abstemious in his language, he made bitter enemies among the liquor dealers, but although of superb physical frame and excellent muscular power he used no physical force or carnal methods of defence, with possibly one exception. Once a publican seized him by the collar, as he was walking along the street, and swore vociferously at him. Pretty soon he had abused his victim so exhaustively, that he was himself out of breath. At the end of this verbal discharge, Mr. Chambers who had listened quietly, lifted his hat, thanked him, said "good morning," and went his way. In 1849 he was introduced to an audience as "the war-horse of the temperance cause." Ever after this he was known as "the war-horse." One elder left his church on this liquor issue. It began to look as if an independent church (which is very far from being a Congregational Church) was, as some had predicted, "anything that John Chambers chose to make it." Certainly under the dominating personality of so bold and yet so tender a soldier of Christ, the church quickly rose to be one of the most aggressive in the city of Penn.