No compromise whatever should be allowed, even though the outcome of it be death or expulsion.

A distinction of a fundamental importance must, therefore, be made between spiritual and administrative matters. Whereas the former are sacred and inviolable, and hence cannot be subject to compromise, the latter are secondary and can consequently be given up and even sacrificed for the sake of obedience to the laws and regulations of the government. Obedience to the state is so vital a principle of the Cause that should the authorities in Germany decide to-day to prevent the Bahá'ís from holding any meeting or publishing any literature they should obey and be as submissive as our Russian believers have thus far been under the Soviet regime. But, as already pointed out, such an allegiance is confined merely to administrative matters which if checked can only retard the progress of the Faith for some time. In matters of belief, however, no compromise whatever should be allowed, even though the outcome of it be death or expulsion.

http://bahai-library.com/writings/shoghieffendi/ldg/vol1/sec-35.html