It’s dawned on me that our understanding of the nature of the Kingdoms (the City of God and the City of Man, to use Augustine phrases) influences our understanding of the meaning of religious as opposed to secular. Clearly, for the Neo-Kuyperians, dominionists, and other one-kingdomers, everything is religious because there is no other alternative, being as there is only one kingdom.
To clarify the way I use the language, given my understanding of the covenants, let me say this. If “religion” means having to do with the kingdom of heaven, then it can be properly juxtaposed with secular, which refers to the second (earthy) kingdom. If religion means worldview or, as I prefer, “philosophical system,” well then juxtaposing with with “secular” makes no sense.
Clearly, my favorite definition, in general, of religion is philosophical system. But when I use religion in the context of a religious/secular distinction, I am actually trying to communicate the distinction between the kingdoms. In this case, therefore, I am not drawing a distinction, as the one-kingdomers might blame me, between living/thinking philosophically neutral and living/thinking religiously.
“Secular” doesn’t refer to a state of philosophical “neutrality,” it refers to whatever is not in the very narrow kingdom of heaven (the church). Secular refers to the “mixed” covenant, in which stands both the elect and the non-elect.