Now, Mr. Campbell cannot maintain on his own principles that he is entitled to construe the Bible and another man is not. This would be popery. Yet his construction of the Bible, which is nothing but a human creed, is applied as a test of church communion to exclude another, notwithstanding his profession that he accepts the terms of salvation required by Mr. Campbell, as he honestly understands them. The latter gives room for endless misunderstandings, wranglings and inequalities. Such differences are inevitable while human reason remains fallible.
Protestants admit no pope, no infallible human umpire.
Campbell's self-contradiction was, then, fated.