There are not 23 Catholic Churches united under the pope or however that was stated. There is only ONE Catholic Church. There may be divisions within the church but that does not mean there is a collection of different churches.
Marat,
This is a case of misunderstanding terminology.
There is only one
universal Church, called the Catholic Church, or as the Creed says: One, Holy, Catholic, and Apostolic Church.
However, there are 23
particular Catholic Churches, known in the Code of Canons as Sui Iuris Churches, that is, Churches of their own law.
In other words: In the one universal Catholic Church, there are 23 particular Sui Iuris Catholic Churches in full communion with the Pope of Rome and with each other.
This
particularity is further down on the local level, with each diocese (or eparchy) as a particular Church. We can then say that in the one universal Catholic Church, there are many particular local Churches in full communion with the Pope or Bishop of Rome, and with each other. We can also say that in each Sui Iuris Church, there are several local Churches in full communion with the Patriarch or chief hierarch of that Church, and with each other. Some Sui Iuris Churches have more dioceses than others, the Latin Church (or Roman Catholic Church) having the most.
Now, the question: Are these Sui Iuris Churches different from each other? Yes they are, though they are grouped along major traditions. There are six such major traditions: Latin or Roman, Constantinopolitan or Greek or Byzantine, Alexandrian, Antiochene, Armenian, and Chaldean or Assyrian. Each major tradition has its own theology, liturgy, spirituality, and disciplines. The 23 Sui Iuris Churches share these 6 major traditions, with most of the 23 Churches utilizing the Constantinopolitan tradition. Only one of the 23 Churches uses the Latin tradition, that is, the Latin Church; Also, only one of the 23 Churches uses the Armenian tradition, that is, the Armenian Catholic Church.
Further, each Sui Iuris Church has her own recession or adaptation of the major tradition which she utilizes. For example, the Maronite Church and the Syriac Catholic Church both use the Antiochene tradition, but the Maronite Church has her own adaptation of this tradition slightly different from the adaptation of the Syriac Catholic Church.
Now, the question: Are they so different from one another that they in fact contradict each other and contradict the one faith spoken of in
Eph. 4:5? No. These traditions are complementary with one another. Sometimes it’s hard to see how one tradition complements another, but with study and a correct understanding of terminology, language, cultural concepts, and other factors, the various traditions can be seen to be harmonious with one another, and as valid and authentic expressions of the one deposit of faith received from the Apostles.
The one Catholic Communion of Catholic Churches is not a uniformed communion. We are not one on the forms, we are many on the forms or expressions. However, we are one on the essentials. Though we use many different wordings, we are all one on the meaning, the underlying essence, of the apostolic faith. We reject both relativism (which destroys the one faith), and uniformity (which destroys the multiplicity and variety of gifts that God has given to each culture).
God bless,
Rony