Contrary to Jesus' wish that his followers 'may all be one', Christianity has become, over time, ever more schismatic.

This concise, one-volume dictionary provides information on over a thousand significant denominations and movements, ranging from the mainstream historical churches, for example Roman Catholic and Orthodox, to heretical sects that flourished briefly in the third or fourth centuries to groups that sprang up around charismatic leaders in the nineteenth and twentieth centuries. Alternatives names are given at the end of entries and are cross-referenced in an...