not just religion is a concept...................everything is a concept................the main word here is relative..............
consider this..................without other colours..................you can't say white is white....................you also can't say white isn't white................
I understand. But concepts do not empower. Beliefs do. That is why religion is a belief.
If your belief is erroneous, it will lead to an erroneous course of action. That is why religions can be dangerous and manipulated.
It can even lead to killings and evils done in the name of God. It may be debatable but the evils done by pious religious leaders (not all religions as some are peaceful) can be equal to that done by the communists who purged all religions. The essential quality that is common to all such people is a belief that those who disagree deserve death. A belief I do not share.