The distinctive basis of this church is proclaimed in its simple constitution, to which every member was required to subscribe: "Denying union and communion with all persons holding the doctrine of perpetual, involuntary, hereditary slavery." This church began its career as "a family church," in the literal sense of the word; but it prospered nevertheless, {p.19} until it became a numerically strong and vigorous organization which has had an active and honorable career of a hundred years' duration. Churches of the same name and principles multiplied and maintained their uncompromising but discriminating opposition to slavery so long as slavery remained a local issue; after which time they were gradually absorbed into the general body of ordinary Baptist churches. During the period of the Illinois Territory, 1809 to 1818, Elder Lemen kept up a most energetic campaign of opposition to slavery, by preaching and rigorous church discipline in the application of the rules against slavery. He himself was regularly ordained soon after the organization of his anti-slavery church. His sons, James and Joseph, and his brother-in-law, Benjamin Ogle, were equally active in the ministry during this period, and, before its close, they had two churches firmly established in Illinois, with others of the same order in Missouri. "The church, properly speaking, never entered politics," Dr. Peck informs us, "but presently, when it became strong, the members all formed what they called the 'Illinois Anti-Slavery League,' and it was this body that conducted the anti-slavery contest."[23] The contest culminated in the campaign for statehood in 1818.