I use to worry as why there is so fight, hate redness, and disputes among religions. Why are they fighting or trying for conversions?

So I thought to read book like Bible, Quran, and Guru Granth Sahib and of course Gita. It took me two years to read and study and finally understand core beliefs prevailing thru interpreters and people who think they are final word or an authority.

I was not clear as I found each book spreading peace so where and how this confusion of difference of opinion started? So I also thought to read and understand Vedas and Vedantas.

Then I struggled a lot to have some reading material or any book which can be of any help. I searched many articles and read many journals. Ultimately I found this book which helped me to understand the cause for these troubles of religions.