Satan accepts and knows exactly who Jesus is...he, however doeas not follow Jesus' teachings nor does he follow Jesus' church, the Catholic church.
To be clear...Satan intellectually knows who Jesus is. He doesn't "accept" Him in the manner the original poster is indicating. To think otherwise shows a lack of knowledge of the text.
Second...the roman catholic church is the one that has been "making up their own rules" as they go along. We can easily point to any of the popes ex cathedra statements, the change in indulgences, etc.
But here is a change in doctrine:
Before Vatican II: The condemnation of freedom of conscience and freedom of worship:
"Especially fatal to the salvation of souls is that erroneous opinion of Liberty of Conscience and Liberty of Worship is the proper right of every man. By Our Apostolic authority, we reject, proscribe, and condmen this evil opinion." ( Pope Pius IX )
After Vatican II: relgious freedom.
"The Council further declares that the right to religious freedom has its foundation in the very dignity of the human person... This right to religious freedom is to be recognised in the constitutional law whereby society is governed. Thus it is to become a civil right." (Declaration on Religious Liberty Dignitatis Humanae)
Here's another:
Until Vatican II
"Cut off from the Church: One must neither pray nor sing psalms with those who are cut off from the communion of the Church, whether clergy or layman: let him be excommunicated" - Council of Carthage.
"How does a Catholic sin against faith? A Catholic sins against Faith by Apostasy, heresy, indifferentism and by taking part in non-Catholic worship." (Catechism of the Council of Trent, Catechism of Pope St. Pius X and The Baltimore Catechism).
However, in the last 50 years:
DIRECTORY FOR THE APPLICATION OFPRINCIPLES AND NORMS ON ECUMENISM
On March 25th, 1993, His Holiness Pope John Paul II approved this Directory, confirmed it by his authority and ordered that it be published. Anything to the contrary notwithstanding., Vatican City, March 25th, 1993
“While the concern for restoring Christian unity involves the whole Church, clergy and laity alike,religious orders and congregations and societies of apostolic life, by the very nature of their particular commitments in the Church and the contexts in which they live out these commitments, have significant opportunities of fostering ecumenical thought and action…”
“taking account of the circumstances of place and persons, to organize meetings among Christians of various Churches and ecclesial Communities for liturgical prayer, for recollection and spiritual exercises, and for a more profound understanding of Christian spiritual traditions;”
As you said...one is right and one is wrong. looks like the roman catholic church just goes with the wind.
Mormon ALSO make this claim: "We have His name on all of our buildings!"
But when you actually see what they PRACTICE; things are quite a bit different.
All their meeting houses have Moroni on the steeple; and THAT is a high point in their doctrine.
*for some reason; he's NOT on the steeple on the building just south of the Santa Clara volcano...
37° 14' 57" N
113° 37' 22" W