The following addition was added to the original Birmingham Statement of Faith by the major section of the Christadelphians in 1886 when questions were raised over the nature of inspiration leading to a division with those who did not add it that lasted 70 years. They were mostly reunited in the 1950s with some dissenters to unity establishing very small breakaway groups. Both groups essentially held the prevailing Christadelphian view of inspiration and it seems the division happened because of an unwillingness to define the statement of faith further and make it a salvation matter.
The historical Christadelphian position is that each word of the Bible is scientifically, theologically and factually correct, unless obviously symbolic or metaphoric. They do not believe that scripture was moderated by time or circumstance or has progressions of understanding or allows for it since. Such views of inspiration were considered “partial inspiration”.
Further Consideration: The Authority of the Bible
THE FOUNDATION--That the book currently known as the Bible, consisting of the Scriptures of Moses, the prophets, and the apostles, is the only source of knowledge concerning God and His purposes at present extant or available in the earth, and that the same were wholly given by inspiration of God in the writers, and are consequently without error in all parts of them, except such as may be due to errors of transcription or translation. 2 Tim. 3:16; 1 Cor. 2:13; Heb. 1:1; 2 Pet. 1:21; 1 Cor. 14:37; Neh. 9:30; John 10:35.