History of the Sabbath and First Day of the Week - John N. Andrews

Another class of witnesses to the truth during
the Dark Ages, bore the name of Cathari, that is,
Puritans. Jones speaks of them as follows:--
"They were a plain, unassuming, harmless, and
industrious race of Christians, patiently bearing the
cross after Christ, and, both in their doctrines and
manners, condemning the whole system of idolatry
and superstition which reigned in the church of
Rome, placing true religion in the faith, hope and
obedience of the gospel, maintaining a supreme
regard to the authority of God in his word, and
regulating their sentiments and practices by that
divine standard. Even in the twelfth century their
numbers abounded in the neighborhood of
Cologne, in Flanders, the South of France, Savoy,
and Milan. 'They were increased,' says Egbert, 'to
great multitudes, throughout all countries.' "[42]
That the Cathari did retain and observe the
ancient Sabbath, is certified by their Romish
adversaries. Dr. Allix quotes a Roman Catholic
author of the twelfth century concerning three sorts
of heretics, the Cathari, the Passagii, and the
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