You may have never heard of it before, but certainly you have seen it and know it to be true for all priests up until now with rare exception.
Those of the syncretist "church" who dissect, re-examine, and dismember anything and everything according to their rationalist system do so in "vain deceit". So while they strive to be comfortable and to "fit in" to this world with their pretty goatees, their Gilette aftershave, and neatly manicured hair, they are chasing the vain glory of the world and not the glory of God.
All of these traditions are in the name of Him Who came into the world to save the lost sheep - the men of vain knowledge - from the burden of their sinful minds, crying: Come unto Me all you who dissect theology in the name of Christ and His Gospel, which only the simplest heart experiences; while those rationalists who can think of every excuse not to follow the traditions and examples of the Holy Fathers have been wandering around in the maze and the darkness of their own wisdom, far from the Christ they have forgotten, engulfed by the vanities of their own intellects. Their hearts no longer feel the breath of God; they are deadened and dried up by their self-conceited wisdom for which men honor them.
"When the good shepherd putteth forth his own sheep, he goeth forth before them, and the sheep follow him for they know his voice" (John 10:4)