At times in the past, the conflict between church and state has been an institutional conflict, sometimes for power, and often for very principled reasons of jurisdiction. It is more than a jurisdictional dispute now: it is religious conflict, and a war unto death.
The modern humanistic state is history’s most jealous god, and it will tolerate no rivals. Hence, its war against Christianity. In this struggle, however, the state has taken on a power far greater than itself.
As the humanistic world powers take “counsel together against the LORD, and against His anointed,” planning to overthrow His law and government, “He that sitteth in the heavens shall laugh: the Lord shall have them in derision” (Ps. 2:4). He shall break His enemies with a rod of iron.
Rushdoony, R.J. (1986). Christianity and the State. Ross House Books, Vallecito, p.187