This simple picture helps explain "Divine Simplicity" and God's many "attributes".

This post is more of a theological reflection rather than an apologetics argument. Oftentimes I've heard people talk about how God is "both infinitely Merciful and infinitely Just," or some similar comparison, as if God somehow was able to hold together many conflicting "attributes" at the same time. I think the answer to these kinds of questions is to recognize that what we think of as God's "attributes" are only half the picture. Consider the following diagram:

This is a picture of White Light (sunlight), which is invisible to the human eye, but when this White Light hits a Glass Prism, the White Light reflects off it and result is the spectrum of the colors of the rainbow. (This is real science you can do at home.) 

The analogy to draw from this example is that God is similar to the White Light in that He is normally invisible to us, while the Prism is similar to Creation, and when God interacts with Creation we see Gods many beautiful attributes throughout nature and in divine revelation. The point being that the colors of the rainbow represent God's attributes, such as Justice, Mercy, etc, and these are truly distinct from Creation's point of view, but in reality these terms are only human terms to describe an ultimate reality (White Light) that is far beyond our mind's ability to grasp. This is one reason why Christian theologians throughout history have described God as "simple," not to suggest God is easy to understand, but rather to say that God isn't composed of many 'parts'. We cannot really fathom or understand God directly, but we can still understand Him 'indirectly' in a real and true manner.

He who sees Mary sees the Father. A simple yet mind-blowing insight to increase Marian devotion.

Marian Devotion is hard for a lot of people, both Catholics and Protestants. This usually stems from the Protestant tendency to denounce the Blessed Virgin as a way to take a swipe at Catholicism. The poison that is usually introduced comes in the form of fear of idolatry, fear of elevating Mary too high, thus detracting from the honor and devotion due to the Trinity alone. But the greatest of Catholic saints, those who were very close to the Father, Son, and Holy Spirit, got that way through their closeness to and high esteem of Mary (and Joseph, but that's for another time). This post is intended to break through that fear, and come out on the other side as madly in love with Mary as your actual mother and not fearing to use very flowery language in honor of Her. I want to keep this post short and hopefully follow it up with other reflections as I am able. 

To get the ball rolling, I want to begin with a profound insight I heard in a homily by Fr Ryan Erlenbush (I highly recommend following his blog and hearing all his sermons). I will summarize what he said and add my own thoughts: Jesus famously said of Himself that "He who sees me sees the Father" (John 12:25). This is one of the most astonishing claims ever made. You can hardly take it in. There's something so beautiful and simple about it, yet so mysterious and mind-blowing. You really have to be a spiritual master to even begin to break this down into digestible pieces for the rest of us. One such profound insight on this is that there is a real sense in which we can say the same thing of the Blessed Virgin Mary: he who sees Mary sees the Father. This is so outrageous sounding that you should be uncomfortable at first just hearing it, and yet it's so eye-opening once you see it that you can never unsee it. 

Countering the Protestant claim that "Oral Tradition" was invented to justify unbiblical teachings.

Protestants are understandably concerned when Catholics appeal to "Tradition" when justifying certain teachings. There is a certain objectivity, and thus safety, about having a written document like the Scriptures. Indeed, that's one of the reasons why Catholics believe God gave us the Scriptures in the first place. Too often, appeals to Tradition are framed in terms of "Catholics cannot justify this teaching from Scripture, so they must turn elsewhere," and that "elsewhere" is seen as some secrete list of teachings passed on orally, from one bishop to another, even though nobody knows when or where. If this is what "Tradition" refers to, then this should be troubling to any Catholic. But fortunately, that's not the case, and in fact the answer is deceptively simple: Oral Tradition within historical Christianity is basically synonymous with the Liturgical Life, that is how the Sacraments are celebrated, the Liturgical Calendar, etc. These are very 'public' sources to consult, and more or less objective as well, so there is no hiding things and then randomly appealing to some unwritten unverifiable "tradition" when need be. 

Why Protestants reject the Council of Nicaea.

The Council of Nicaea is a very useful apologetics tool beyond just discussing matters of the Trinity. What most people don't realize is that Nicaea produced more than just a Creed, it also issued 20 canonical laws which were binding on all Christians living at that time. The information contained in these Canons is just as useful (if not more so) as any Church Father when it comes to evaluating Protestantism against the bar of Church history. Below, I will mention why each of the 20 Canons are incompatible with all Protestantism in one way or another. This leaves Protestantism in a significant bind, because virtually all Protestants wholeheartedly affirm the Creed and deem the Council to be an orthodox testimony in early Christianity. After reading these Canons, the Protestant must recognize that they cannot embrace the Creed without also embracing the Canons, because if the Canons teach heresy and error, then the Protestant has no business at all embracing the Creed which this same Council produced. Protestants have no problem affirming the Catholic Church is correct on a lot of things, but they say the Catholic Church is false and cannot be trusted because it also teaches many errors. By this same logic, a Protestant must reject Nicaea as well, for Nicaea teaches many "errors" in its Canons and binds all Christians to these "errors" as well.

Love this quick yet effective refutation of sola fide (which the Protestants didn't see coming).

I think I've come upon a devastating yet subtle 'quickie' argument against the Protestant (especially Reformed) notion of justification by faith alone. Catholics will often point out that "faith that works through love" is what Paul meant when he spoke of the essence of a justified believer (Gal 5:6), and that without love we are told by James that "faith is dead" (James 2:24-26). Protestants think they have an answer for this, by insisting (without proof) that "true faith always comes with love" with it. This seems like a save at first, but thinking about this means the Protestant is saying that when a person receives the gift of faith prior to justification, they also receive the gift of love along with it. That's a problem, and here's why. 

If a person receives faith and love prior to justification, it means the unsaved individual loves God already, prior to even accepting the Gospel message! This cannot be, and thus the Protestant must reject this and say faith doesn't automatically include love along with it prior to justification. This leads to a few significant but plain conclusions:

(1) Faith prior to justification lacks love, and thus this faith must start off 'dead'. This isn't necessarily a bad thing, just an incomplete thing, which is why justification is still needed. 

(2) Justification must be what bestows love, and this seems confirmed by Scripture (e.g. Romans 5:5), and thus the Protestant can no longer say justification is purely forensic, but rather infuses divine gifts into the soul.

(3) Dead faith prior to justification becomes living faith after justification by the addition of love to faith, and herein is the essence of a justified believer. This would mean it isn't Christ's Imputed Righteousness that makes all the difference, but rather the presence/absence of love, and thus suggests your justification (salvation) hinges upon what you do with that love. This is why texts like Revelation 21:8 list "unbelief" as one of the many sins that can damn a person, because it's possible to have faith and be damned by other grave sins.

Given the above, when Paul says we are "justified by faith," he isn't saying we are "eternally saved by faith," rather he's saying that we receive God's love within us by believing in the Gospel, and that this is just the beginning of our salvation (Rom 13:8-14; Gal 5:13-14).