Robert Blatchford, author

Religions are not revealed: they are evolved. If a religion were revealed by God, that religion would be perfect in whole and in part, and would be as perfect at the first moment of its revelation as after ten thousand years of practice. There has never been a religion that which fulfills those conditions. -Robert Blatchford, author (1851-1943)

There are several logical problems in this statement. One problem is that it assumes that the revelation must be complete all at once. Some religions may claim such revelation, but Christianity at least does not. Another difficulty is that only way to determine whether a given religion is "perfect in whole and in part" is see it expressed in some human way, and human expressions are always faulty, in word or deed.