Salamun Alaikum brother
i wrote something about this, so if I may answer the answer would be: Yes.
The Quran is actually intended to be a message, in which we, or the readers, are supposed to know the meaning of the Arabic of the Quran itself. Quran is sent down in Arabic because the language of the prophet is Arabic. This is clearly mentioned in Fussilat (41st chapter) verse 44. Some other verses also support this verse Ash-Shura or Asy-Syura (Chapter 42 ) verse 7, Maryam (19) verse 97, and Ad Dukhan (44) 58.
By knowing this, we know now that the rest of the verse in which “Arabic language” is mentioned initially is addressed to the prophet or the Arabic people at that time. In Quran these verses that mentioned “Arabic language” (with the exception verses that has been discussed above) are: Yusuf (Ch.12) verse 11, Ar Rad (13) 37, Ta-Ha (20) 113, Ash-Shu’araa/Asy-Syua’ara (26) 195, Az Zumar (39) 28, Ha-Mim/Fussilat (41) 44, and Az-Zukhruf (43) 3.
There are actually two other verses that explicitly mention about “Arabic language”, which are An Nahl (16) 103 and Al Ahqaf (35) 12. However, these two verses give different emphasis from the rest of the verses in which Arabic language are mentioned in it. In An Nahl 103, the emphasis is in denying the accusation that Quran was made by Prophet Muhammad by learning it from other people. Meanwhile, Al Ahqaf 12 explains that Quran is the book that confirmed the scripture that was sent down to Musa (Moses) the prophet. It should be noted that although this verse (Al Ahqaf 12) explained that Quran is indeed the Book confirming the Scripture of Moses the prophet, yet it is also explained that it is confirmed by using Arabic-language. This implies that the Scripture/Book of Moses might not have been sent down in Arabic. Thus, this information is consistent with the information in Ibrahim (14) verse 4 that every prophet (or messengers) spoke the language of their people.
Language here, and in any act of communication, actually only play the role of a "bridge" to deliver meaning. Therefore, any messengers were sent in the language of their own people as it has been explained in 4th verse of Ibrahim (14th).
Now, you actually have two different questions:
1. does the Quran transcend the language barrier?
and 2. do we rely on God?
These are two different matters.
The answer of the question no. 1 is simple: it was supposed to. But, then again, Quran is a medium in which it is passive; the way any books is. A book is nothing more than a medium to record and "transfer" information between the writer and the readers. The one that is supposed to be active is the humans. We are actually the one that is supposed to be active and take the lessons from the Quran itself. Thus, as the non-Arabic language speakers, we must see it beyond the language of the Quran or the Arabic itself. If you want to see the whole point of the revelation of Quran itself, you may want to look up the Al Qamar chapter (chapter 54) mainly these verses: 15, 17, 22, 32, 40, and 51.
Now, by understanding question number 1, we will be able to answer question no. 2: is there any in this planet that can be relied on but God?
There is a deep and very long explanation concerning the 2nd question. It simply could not be answered by yes and no or brief explanation. Yet, the most vital point will go back to us: do we really understand how it works?
By understanding the Quran, we are expected to understand that, in the end, God is the Only One that makes the final decision for our own good through His Wisdom. This is why "muslims" is said to be "those who submitted to the Will of God" (CMIIW). The thing we should do is that we try our best as it is implied in 2:134, 141, 13:42, 14:51, 6:158, 17:19, 20: 15, 25:47, and some more verses. But then again, how do we try our best if we do not even know where we are going? It would be like driving without Google map in unfamiliar or foreign road. Therefore, the thing that we should do in the first place is simply trying to understand the Quran or the "map" itself. This is what I believe most people in this forum trying to do; they try to understand the map itself.
This is the conclusion I get by trying to understand the Quran itself. So, my answer would be:
1. Yes, but we are the one that should be active in overcoming that language barrier
2. Well, by finding the answer of no.1, I believe you would be able to answer this question yourself.
This is my humble opinion. I apologize for any mistakes I made. It would be my own limitation as an ordinary humans. But whatever good you find in my writings, those must come from the Quran. You may want to study and understand it, because it is truly interesting.
My Regards
Salamun Alaikum