I’m still working on my Bucer paper, so here’s another quote on Bucer’s view of the relationship between the church and the state:
Further, as the Kingdom of Christ subjects itself to the kingdoms and powers of this world, so in turn every true kingdom of the world (I say kingdom, not tyranny) subjects itself to the Kingdom of Christ, and the kings themselves are among the first to do this, for they are eager to develop piety not for themselves alone, but they also seek to lead their subjects to it.
Again, on the role of the state with regard to families:
Thus, because the authorities are a father, they must truly and even zealously ward off every trouble from their community, just as a particularly conscientious father is duty bound to keep all trouble away from his house, because the authorities are subject to a higher command and in a wider sense are fathers of the fatherland. They should therefore take responsibility for what individual fathers neglect or are unable to accomplish by way of Christian discipline and urgings toward piety.
Both of these are cited by Martin Greschat in his chapter on ‘Church and Civil Community’ in D.F. Wright’s book on Bucer.