ORTHODOXY is the only true religion!
All the other so-called "christian churches" changed very very many things in Christianity..
Catholicism changes and ajusts doga every day(a metaphore, but you got the idea).
Orthodoxy has remain pure and unchanged since the 7 ecumenical councils at the dawn of Christianity.
Catholics left us, and after them, the protestants split from them and driifted farther away from the true essence of Christianity, and then the anglicans, penticostals, baptists, etc, etc.... Now there are hundreads or even thousand of so-called "christian churches".Catholics are the origin of all the sects today.
It is a saying...
There were three Great falls in history:
1)The fall of Satan
2)The fall of Adam
3)The fall of the first Pope in 1054!
But the Truth is only one, and is found in the only Church founded by the 12 apostols.
The Orthodox Church.
Orthodox =The Right Faith
Ortho = Right,Unchanged
Dox = Dogma,Faith
All the thousands of so-called christian churches starting with Catholicism lost Apostolic descendence.
They are anathematised, because they changed the Faith.