Is there a source for that article online? I know I read it before, and I recall it being quite good, but I can’t find it anywhere now.
As for the original questions, this area is one of my major focuses of interest. It’s a big one to me because when I entered the Catholic Church I only knew of Latin writings, and I found theosis all over the place in my favorite theologians, such as St. Thomas Aquinas, St. John of the Cross, and St. Theresa of Avila to name just a few of the most well known. Then I came across the accusation that the West didn’t have this concept of theosis, despite the fact that my Dominican instructors were talking about it every day (though not with the word theosis, obviously). It took me a long time to figure out which “West” was being referred to when these accusations were being made, but I came to realize that what is actually being referred to is the largely Protestant-influenced post-Trent discussions where the focus is on sins and how they are “cleaned up” in an almost accountant-like manner.
I found that prior to, and at, Trent, one of the major dividing lines between the Catholics and the Protestant reformers was precisely over this question of theosis. Are our sins merely transactionally forgiven, or does God fill us with His own Divine Life and therefore obliterate all sin in His purity which fills us? Anyone familiar with the Catholic side of that debate knows that “being filled with the Divine Life” played heavily in the Catholic answer to Protestant notions such as our sins being merely “covered up”, so theosis (or deification, as it is called in Latin-based terminology) is actually quite central to the fundamental Latin theology, it just unfortunately got pushed aside by a lot of other issues, and by the fact that it was almost impossible to dialogue with most Protestants when holding staunchly to such views and terminology.
So here’s my perspective on the matter. The Beautific Vision is not the same as theosis, but does refer to one part of it. Theosis would be better described in Western terms as the filling of people with the Divine Life (Grace) which transforms us into true children of God, and enables us to work in Divine and Holy ways (not necessarily by working miracles, but rather in the sense of us working with God, and as God would work). Theosis in this life would be most comparable to the infusion and growth of the Theological Virtues, which are a share in the Divine Nature (Faith and Hope are a share in the Divine Wisdom, and Charity is the share in Divine Love, for example). This transformation and share of Divine Life is prayed for in many traditional Latin prayers, including the Rosary.
The Beautific Vision, or direct vision and enjoyment of God, is really only the final “part” of theosis, the “end goal”. We must be made like God to see God, and in seeing God we are like God. It’s the reason for theosis, since it’s the highest attainment of it, but it also doesn’t encapsulate the whole meaning of theosis which includes the journey as well as the destination. This doesn’t mean that the journey isn’t discussed in the Latin tradition, it just means that it’s distinguished in terminology. This also explains why the Beautific Vision seems more “passive” than theosis; it is because it refers only to the part of theosis which is the receiving of, and vision of, God Himself. That being said, the Beautific Vision isn’t properly “passive”, as we still must “cling to it” in Grace (something that infallibly occurs to those in Heaven), but it definitely refers to the more “passive” element of sharing the Divine Life.
So to use some Latin terms to summarize, as Madaglan has already hit the nail on the head on the head in this regard, is that though theosis implicitely includes the Beautific Vision in its definition, it’s most akin to justification and sanctification. With that comparison it’s easy to see how it is active, since we Catholics believe that justification and sanctification can’t be merely passive receptions, but are our active approach to God
along with God pouring Himself into us. It’s also easy to see how the Beautific Vision is the “end” of sanctification, in the sense of being the ultimate expression and goal; after all, with the Beautific Vision we possess the Divine Life and Holiness as fully as humanly possible.
Incidentally, the Beautific Vision is regarded as something that can happen in this life (in a manner of speaking; it truly goes beyond the normal living we are used to), but it’s a fleeting thing and not the permanent “holding fast to the vision of God” that we will have in Heaven. St. John of the Cross and St. Theresa of Avila speak extensively on this, and St. Thomas Aquinas talks about it in reference to Moses and St. Paul (Moses is said to have explicitely seen and spoken to God, while Paul implicitely so when he was “caught up in the clouds and didn’t know if he was living or dead”.
As for the Uncreated Light, that’s a whole other can of worms I’ll delve into in my next post.
Peace and God bless!