Bishop N. T. Wright, Anglican Bishop of Durham, is a biblical exegete and historian of first rank. His academic and popular publications are for many -- and certainly for me -- great sources of knowledge, wisdom, and inspiration. Importantly, in all his academic endeavors, he has never lost his primary calling as pastor, as servant of the servants of God. He brings this pastoral calling and sensitivity to all he writes.
The following link is to a sermon Bishop Wright recently delivered which addresses the relationship between civil authorities and the kingdom of God. Though the context is British, it has universal application. Read and pray.