1911 Encyclopædia Britannica, Volume 22… (1911)
“ In Germany it had, for a while, been assumed by the Lutherans as against the Calvinists, and when in 1817 King Frederick William III. of Prussia forcibly amalgamated the Lutheran and Reformed Churches in the new “Evangelical Church” its public use was forbidden in the Prussian dominions. It survived, however, in spite of royal decrees, but in an altered sense. It became—to quote Professor Kattenbusch—the “secular” designation of the adherents of the Reformation, the shibboleth of the “liberal” ecclesiastical and theological tendencies. ”
