One central problem with conventional religions, is that they are driven by human want (desire), not need . Need is the more important, but people prefer to stay attached to what they want. Discord between conventional religions arises from conflict of want(s). The core of true religious teaching can be found in the simplicity of LOVE . Here's a sample quote from Hinduism, highlighting the core of true religion (as opposed to conventional religion); "I make no distinction between one religion and another. People may worship me in any form they wish. The form of worship does not matter to me; my only concern is the quality of love which is expressed in worship. I accept every kind of worship, because I am supreme." -The Bhagavad Gita (Sorry, no chapter attribution available.) Want, which focuses on outcome, is a test of one's religious allegiance. If you ask, 'Am I part of the winning side?' Or, 'Will I receive the good reward for my allegiance?' ...
"How wonderful, how wonderful, all things are perfect as they are." Buddha