There are a few errors, like 'human's' and 'the weakest ..then'. Looking at the aspect of 'decrypting' the writing, it jumps around a bit. Take the 'to mention a few' part- this isn't a sentence, and should be joined onto the previous sentence where it belongs. Secondly, it isn't substantiated. i'm not a religious person, but some of the elements need soe back-up for me- is lust an inredient of faith? The next sentence then pops up without any connection. In discursive writing, sentences should be connected- this way they build up into a clearer picture. If they aren't connected, they become a shopping list of points.
In the second paragraph, 'faith' appears with and without inverted comas, which is inconsistent. In line 3, I'd change 'reaching the truth' because this suggests you have reached it, while line 5 suggests that the Quran offers a blueprint for how to reach it. The concluding phrase needs to change a bit- 'clear to me that I know but little' (if you want to keep the rhetorical flourish)
I don't know if there are limits on the length of the text, but if not, then try to answer the following question- could a reader, like me, who has not read the Quran and has a very limited knowledge of Islam, read this and know how your studies enabled you to see beyond your first definition of faith and acquire the knowledge and skills to set yourself on the journey towards finding the truth? I have got the idea clearly enough, but you haven't given me examples to show me how this process happened- if you did that, you'd make your point a lot more forcefull in my opnion.