From the investigative premise of a Foucauldian archaeology of knowledge, this article attempts to unearth the layers of ideas which constituted the Hervormd approach to doing theology over the past century. Digging into seemingly disassociated bodies of theological precedents, the article anatomizes four layers of ideas in a series of diverse orientations towards theology, namely the (1) ethical, (2) confessional and (3) dialectical orientations, and stemming from a Kantian orientation in particular, (4) the validity of ‘the philosopher’s voice’ in the often tense relationship between theology and philosophy. Respecting the inexplicit nature of this multifarious kind of theology, the author calls for an ongoing estimation of the diversity of voices within the Hervormd approach, rejecting any attempt to integrate these different layers of thought into a monolithic enterprise of knowledge about God and the world.