Negative mysterianism
The negative mysterian holds that the true doctrine of the Trinity is not understandable because it is too poor in intelligible content for it to positively seem either consistent or inconsistent to us. In the late fourth-century pro-Nicene consensus this takes the form of refusing to state in literal language what there are three of in God, how they’re related to God or to the divine essence, and how they’re related to each other. (See section 3.3 in the supplementary document on the history of Trinity theories.) The Persons of the Trinity, in this way of thinking, are somewhat like three men, but also somewhat like a mind, its thought, and its will, and also somewhat like a root, a tree, and a branch. Multiple incongruous analogies are given, the idea being that a minimal content of the doctrine is thereby expressed, though we remain unable to convert the non-literal claims to literal ones, and may even be unable to express in what respects the analogies do and don’t fit. Negative mysterianism goes hand in hand with the doctrines of divine incomprehensibility (that God or God’s essence can’t be understood completely, at all, or adequately) and divine ineffability (that no human concept, or at least none of some subset of these, applies literally to God). Some recent studies have emphasized the centrality of negative mysterianism to the pro-Nicene tradition of trinitarian thought, chastising recent theorists who seem to feel unconstrained by it (Ayres 2004; Coakley 1999; Dixon 2003).
The practical upshot of this is being content to merely repeat the approved trinitarian sentences. Thus, after considering and rejecting as inadequate multiple analogies for the Trinity, Gregory of Nazianzus concludes,
So, in the end, I resolved that it was best to say “goodbye” to images and shadows, deceptive and utterly inadequate as they are to express that reality. I resolved to keep close to the more truly religious view and rest content with some few words, taking the Spirit as my guide and, in his company and in partnership with him, safeguarding to the end the genuine illumination I had received from him, as I strike out a path through this world. To the best of my powers I will persuade all men to worship Father, Son, and Holy Spirit as the single Godhead and power, because to him belong all glory, honor, and might forever and ever. Amen. (Nazianzus, Oration 31, 143.)
Opponents of this sort of mysterianism object to it as misdirection, special pleading, neglect of common sense, or even deliberate obfuscation. They emphasize that trinitarian theories are human constructs, and a desideratum of any theory is clarity. We literally can’t believe what is expressed in trinitarian language, if we don’t grasp the meaning of it, and to the extent that we don’t understand a doctrine, it can’t guide our other theological beliefs, our actions, or our worship (Cartwright 1987; Dixon 2003, 125–31; Nye 1691b, 47; Tuggy 2003a, 176–80). Negative mysterians reply that it is well-grounded in tradition, and that those who are not naively overconfident in human reason expect some unclarity in the content of this doctrine.
