Thank you for your replies, I will do my best to seek your advice; and 9-10ths_Penguin, I very much realize that many aspects would have to be left out of the total scenario, but what I am trying to say is that beliefs or disbeliefs can usually connect one Religion or faith together. Isn't that what it is mostly about? I have studies in Criminal Law and Justice Technology in which you need to define and seek tangible relevance in order to solve the "mystery". I guess I just apply this mentality to Religions as well.
That really can't be done without a judgement call at some point. What should be considered a religion? What should be emphasized, kept, ignored or corrected in each?
A fair and perhaps necessary effort, but not one that can be easily fulfilled in a way that everyone will accept.
There are several disputing views on the matter, and I fear that not all can be reconciled.
Personally, I ended up accepting that there are definitely such things as misguided religions, and even social diseases that are widely accepted as religions. Not a pleasant conclusion to reach, but IMO a necessary one. The duty to accept that responsibility is very real.
Some popular takes on the core tenets of several religions that might serve as common ground include, out of the top of my head:
- The Golden Rule and its consequences. Unitarian Universalism comes to mind.
- Common claims of origin and objects of worship (e.g., claims of worship of the same God). By this criterium, you should learn about the Bahai Faith and the Ahmadiyya Islaam.
- Claims of successorship and inheritance. That is a very questionable claim for various reasons, but nevertheless a common one.
That said, it seems to me that any reasonably developed practice will realize that we all should learn from others, including other traditions, when the opportunity presents itself and the teaching is sufficiently sound.