Constitution of "The Brethren"

The object of this society shall be to effect, in the persons of its members, a mission to the heathen...Each member shall keep himself absolutely free from every engagement which, after his prayerful attention, and after consultation with his brethren, shall be deemed incompatible with the object of this society, and shall hold himself in readiness to go on a mission when and where duty may call.

-- The first American Missions Board

Dietrich Bonhoeffer

I believe that God will give us in each state of emergency as much power of resistance as we need.  But he will not give in advance, so that we do not rely on ourselves but on Him alone.