The absolute
simplicity of God’s essence
–
an alien philosophical intrusion from NeoPlatonism
into scriptural teaching on the Godhead.


'To
set up on high those that be low; that those which mourn may be
exalted to safety.
He disappointeth the devices of the crafty, so that their hands cannot
perform their enterprise.
He taketh the wise in their own craftiness: and the counsel of the
froward is carried headlong.' (Job 5.11-13)
'Where is the wise? where is the scribe? where is the disputer of this
world? hath not God made foolish the wisdom of this world? For after
that in the wisdom of God the world by wisdom knew not God, it pleased
God by the foolishness of preaching to save them that believe.' (1
Cor.1.20-21)
Let no man deceive himself. If any man among you seemeth to be wise in
this world, let him become a fool, that he may be wise. For the wisdom
of this world is foolishness with God.' (1 Cor.3.18-19a)
'As ye have therefore received Christ Jesus the Lord, so walk
ye in him: Rooted and built up in him, and
stablished in the faith, as ye have been
taught, abounding therein with thanksgiving.
Beware
lest any man spoil you through philosophy and vain deceit, after the
tradition of men, after the rudiments [stoiceia – fundamental axioms] of the
world, and not after Christ. For in him dwelleth
all the fulness of the Godhead bodily.'
(Col 2.6-9)
Absolute simplicity is a
cardinal axiom of the first principle in NeoPlatonism
This supreme principle is
designated “One”; it is removed from every sort of determination and
is therefore absolutely simple.
The Platonic Tradition, Maria
Gatti in The
He shares with Plato the
principle that eternal complexity or multiplicity cannot be
ultimate. That is, thee must be some first principle of all that is
absolutely simple and stands in some sort of causal relation to the
complex that accounts for eternal truth.
Introduction
L.Gerson. Ibid.

Plotinus
5th Ennead, Fourth Tractate.
‘How
the
secondaries rise from the first: And
on the One.
Anything existing after
The First must necessarily arise from that First,
whether immediately or as tracing back to it through intervenients;
there must be an order of secondaries
and tertiaries, in which any second is
to be referred to The First, any third to the second.
Standing before all
things, there must exist a Simplex, differing from all its sequel,
self-gathered not inter-blended with the forms that rise from it,
and yet able in some mode of its own to be present to those others:
it must be authentically a unity, not merely something elaborated
into unity and so in reality no more than unity’s counterfeit; it
will debar all telling and knowing except that it may be described
as transcending Being — for if there were nothing outside all
alliance and compromise, nothing authentically one, there would be
no Source. Untouched by multiplicity, it will be wholly
self-sufficing, an absolute First,
whereas any not-first demands its earlier, and any non-simplex needs
the simplicities within itself as the very foundations of its
composite existence.’
Evidence
for
the impact of this erroneous teaching and its precursors on
Christian doctrine.
Clement Of Alexandria, A champion of apophatic theology and syncretism with Greek philosophy - though he antedated Plotinus and his Alexandrine teacher Ammonius Saccas.
He seems to have been profoundly influenced by the syncretism of Pantaenus the comverted Stoic and perhaps of Ahenagoras, the first two deans at the Catechetical School in Alexandria.
How careless he seems of the Apostolic warnings above!
Stromateis 5 (28, i)
'Philosophy was necessary to the
Greeks for righteousness, until the coming of the Lord: and even now
it is useful for the development of true religion, as a kind of
preparatory discipline for those who arrive at faith by way of
demonstration. For ‘your foot will not stumble,’ as the Scripture
says, if you attribute to Providence all good things, whether
belonging to the Greeks or to us. For God is the source of all good;
either directly, as in the Old and New Testaments, or indirectly, as
in the case of philosophy. But it may even be that philosophy
was given to the Greeks directly; for it was ‘a schoolmaster,’ to
bring Hellenism to Christ, as the Law was for the Hebrews. Thus
philosophy was a preparation, paving the way for the man who is
brought to perfection by Christ.'
Stromata 5.12.
This discourse respecting God is most difficult to handle. For
since the first principle of everything is difficult to find out,
the absolutely first and oldest principle, which is the cause of
all other things being and having been, is difficult to exhibit.
For bow can that be expressed which is neither genus, nor
difference, nor species, nor individual, nor number; nay more, is
neither an event, nor that to which an event happens? No one can
rightly express Him wholly. For on account of His greatness He is
ranked as the All, and is the Father of the universe. Nor are any
parts to be predicated of Him. For the One is indivisible;
wherefore also it is infinite, not considered with reference to
inscrutability, but with reference to its being without
dimensions, and not having a limit. And therefore it is without
form and name. And if we name it, we do not do so properly,
terming it either the One, or the Good, or Mind, or Absolute
Being, or Father, or God, or Creator or Lord. We speak not as
supplying His name; but for want, we use good names, in order that
the mind may have these as points of support, so as not to err in
other respects. For each one by itself does not express God; but
all together are indicative of the power of the Omnipotent. For
predicates are expressed either from what belongs to things
themselves, or from their mutual relation. But none of these are
admissible in reference to God. Nor any more is He apprehended by
the science of demonstration. For it depends on primary and better
known principles. But there is nothing antecedent to the
Unbegotten. It remains that we understand, then, the
Unknown, by divine grace, and by the word alone that proceeds from
Him...'
The Divine Nature then is boundless and hard to understand; and
all that we can comprehend of Him is His boundlessness; even
though one may conceive that because He is of a simple nature He
is therefore either wholly incomprehensible, or perfectly
comprehensible. For let us further enquire what is implied by "is
of a simple nature." For it is quite certain that this
simplicity is not itself its nature, just as composition is not by
itself the essence of compound beings.
Ἄπειρον οὖν τὸ θεῖον καὶ δυσθεώρητον καὶ τοῦτο πάντη καταληπτὸν
αὐτοῦ μόνον ἡ ἀπειρία· κἄν τις οἴηται τῷ ἁπλῆς εἶναι φύσεως ἢ
ὅλον ἄληπτον εἶναι ἢ τελέως ληπτόν. Τί γὰρ ὃς ἁπλῆς ἐστι
φύσεως͵ ἐπιζητήσωμεν. Οὐ γὰρ δὴ τοῦτο φύσις αὐτῷ ἡ ἁπλότης, εἴπερ
μηδὲ τοῖς συνθέτοις͵ μόνον τὸ εἶναι συνθέτοις.
Both the Bishop and his extreme Arian opponent are firm
advocates of Divine Simplicity and battle for the prize of the
possession of Plotinus' ideology
'But let us still scrutinize his words. He declares each of these
Beings, whom he has shadowed forth in his exposition, to be single
and absolutely one. We believe that the most boorish and
simple-minded would not deny that the Divine Nature, blessed and
transcendent s it is, was ‘single.’ That which is viewless,
formless, and sizeless, cannot be conceived of as multiform and
composite. But it will be clear, upon the very slightest
reflection, that this view of the supreme Being as ‘simple,’
however finely they may talk of it, is quite inconsistent with the
system which they have elaborated. For who does not know that, to
be exact, simplicity in the case of the Holy Trinity admits of no
degrees. In this case there is no mixture or conflux of qualities
to think of; we comprehend a potency without parts and
composition; how then, and on what grounds, could any one perceive
there any differences of less and more. For he who marks
differences there must perforce think of an incidence of certain
qualities in the su object. He must in fact have perceived
differences in largeness and smallness therein, to have introduced
this conception of quantity into the question: or he must posit
abundance or diminution in the matter of goodness, strength,
wisdom, or of anything else that can with reverence be associated
with God: and neither way will he escape the idea of composition.'
(Exposition of the Orthodox Faith, Book 1, Chapter 2).
'We believe, then, in One God, one beginning , having no
beginning, uncreate, unbegotten, imperishable and immortal,
everlasting, infinite, uncircumscribed, boundless, of infinite
power, simple, uncompound, incorporeal, without flux, passionless,
unchangeable, unalterable, unseen, the fountain of goodness and
justice, the light of the mind, inaccessible; a power known by no
measure, measurable only by His own will alone (for all things
that He wills He can ), creator of all created things,'
(Ibid, Chapter 8)

Divine Simplicity is the corner stone of Aquinas' Summa Theologiae, drawing explicitly from Aristotle and Augustine's De Trinitate, though the unstated influence of neo-Platonism seems strong.
Turretin’s Institutes of
Elenctic Theology, The
One and Triune God, Q.V,
Can the divine attributes be
distinguished from the divine essence? We deny against the
Socinians.
VII The attributes of God cannot really differ
from his essence or from one another (as one thing from another)
because God is most simple and perfect. Now a real distinction
presupposes things diverse in essence which the highest simplicity
rejects.
VIII
For where there is ground for founding distinct formal conceptions
of anything (although one and simple in itself considered), there
we must grant virtual and eminent distinction.
XII
He who conceives what is actually and really one and simple in God
as actually and really diverse, conceives what is false. But he
who conceives that what is actually one in
itself as more than one virtually and extrinsically or
objectively, does not conceive what is false. Rather he conceives
the thing imperfectly and inadequately on account of the weakness
of the human intellect and the eminence and perfection of divine
nature.
XIV The properties of many are on the part of
the object and end (or of the operations and effects), but not on
the part of the subject or principle, which is one and perfectly
simple.
XVI
The definition of a thing in itself differs from our conceptions
of that thing. The former, not the latter, argues a real
distinction. Now the definitions of the divine properties are
rather of our conceptions (conceiving God under this or that
relation) than of the thing itself (which is one and most simple).
Uncharacteristically
Turretin quotes no proof texts in
this section at all, and no surprise
given the source of his curious assertions. His main concern for
defending simplicity seems to be the use Socinus
made of distinguishing God’s attributes from His essence to deny
the personality of the Holy Spirit.
'When
we speak of the simplicity of God, we use the term to describe the
state or quality of being simple, the condition of being free from
division into parts, and therefore from compositeness. It means
that God is not composite and is not susceptible of division in
any sense of the word.
The
simplicity of God follows from some of His other perfections; from
His Self-existence, which excludes the idea that something
preceded Him, as in the case of compounds; and from His
immutability, which could not be predicated of His nature if He
were made up of parts.
Scripture
does
not explicitly assert it, but implies it where it speaks of God as
righteousness, truth, wisdom, light, life, love and so on, and
thus indicates that each of these properties, because of their
absolute perfection is identical with His Being.'
A
recent defence by Matthew Graham
A list of scripture quotes, proving what is not in
dispute, namely monotheism, but scarcely grappling with the question
of the simplicity of the Divine nature per se from the scriptural
data, and at the end relying on philosophical reasoning to
assert the case for cimplicity.
Have we not unwittingly fallen prey to Calvin’s warning about
idolatry?
‘The human mind, stuffed as it
is with presumptuous rashness, dares to imagine a god suited to
its own capacity; as it labours under
dullness, nay, is sunk in the grossest ignorance, it substitutes
vanity and an empty phantom in the place of God’
John Calvin, Institutes,
Book 1. Ch.XI. Sn.8.


