On top of the misuse of the word "church, is the misuse of the word "traditions". Too many priests are stating that the Catholic Church is merely one of many "traditions" of worship and belief.
Not so, as the only one tradition back to Christ is the Catholic Church. The Othodox Church derives "efficacy" "from the very fullness and grace entrusted to the Catholic Church." There is a mistaken view that the word "traditions" can be applied to the Protestants, while is only applies to the Orthodox. See the last paragraph from the Decree on Ecumenism below. The Protestant communities are not different traditions, but dissenting groups. Only the Orthodox may be called one of the "traditions". The Protestants are called a strange title, "ecclesial Communities", but not Church or church. They are "sort-of" church communities, but not quite and absolutely not a "tradition".
Here is a key section from Dominus Iesus:
The Catholic faithful are required to profess that there is an historical continuity — rooted in the apostolic succession53 — between the Church founded by Christ and the Catholic Church: “This is the single Church of Christ... which our Saviour, after his resurrection, entrusted to Peter's pastoral care (cf. Jn 21:17), commissioning him and the other Apostles to extend and rule her (cf. Mt 28:18ff.), erected for all ages as ‘the pillar and mainstay of the truth' (1 Tim3:15). This Church, constituted and organized as a society in the present world, subsists in [subsistit in] the Catholic Church, governed by the Successor of Peter and by the Bishops in communion with him”.54 With the expression subsistit in, the Second Vatican Council sought to harmonize two doctrinal statements: on the one hand, that the Church of Christ, despite the divisions which exist among Christians, continues to exist fully only in the Catholic Church, and on the other hand, that “outside of her structure, many elements can be found of sanctification and truth”,55 that is, in those Churches and ecclesial communities which are not yet in full communion with the Catholic Church.56 But with respect to these, it needs to be stated that “they derive their efficacy from the very fullness of grace and truth entrusted to the Catholic Church”.57
17. Therefore, there exists a single Church of Christ, which subsists in the Catholic Church, governed by the Successor of Peter and by the Bishops in communion with him.58 The Churches which, while not existing in perfect communion with the Catholic Church, remain united to her by means of the closest bonds, that is, by apostolic succession and a valid Eucharist, are true particular Churches.59 Therefore, the Church of Christ is present and operative also in these Churches, even though they lack full communion with the Catholic Church, since they do not accept the Catholic doctrine of the Primacy, which, according to the will of God, the Bishop of Rome objectively has and exercises over the entire Church.60
On the other hand, the ecclesial communities which have not preserved the valid Episcopate and the genuine and integral substance of the Eucharistic mystery,61 are not Churches in the proper sense; however, those who are baptized in these communities are, by Baptism, incorporated in Christ and thus are in a certain communion, albeit imperfect, with the Church.62 Baptism in fact tends per se toward the full development of life in Christ, through the integral profession of faith, the Eucharist, and full communion in the Church.63
“The Christian faithful are therefore not permitted to imagine that the Church of Christ is nothing more than a collection — divided, yet in some way one — of Churches and ecclesial communities; nor are they free to hold that today the Church of Christ nowhere really exists, and must be considered only as a goal which all Churches and ecclesial communities must strive to reach”.64 In fact, “the elements of this already-given Church exist, joined together in their fullness in the Catholic Church and, without this fullness, in the other communities”.65“Therefore, these separated Churches and communities as such, though we believe they suffer from defects, have by no means been deprived of significance and importance in the mystery of salvation. For the spirit of Christ has not refrained from using them as means of salvation which derive their efficacy from the very fullness of grace and truth entrusted to the Catholic Church”.66
And from Unitatis-Redintegratio:
The Special Consideration of the Eastern Churches14. For many centuries the Church of the East and that of the West each followed their separate ways though linked in a brotherly union of faith and sacramental life; the Roman See by common consent acted as guide when disagreements arose between them over matters of faith or discipline. Among other matters of great importance, it is a pleasure for this Council to remind everyone that there flourish in the East many particular or local Churches, among which the Patriarchal Churches hold first place, and of these not a few pride themselves in tracing their origins back to the apostles themselves. Hence a matter of primary concern and care among the Easterns, in their local churches, has been, and still is, to preserve the family ties of common faith and charity which ought to exist between sister Churches.
Similarly it must not be forgotten that from the beginning the Churches of the East have had a treasury from which the Western Church has drawn extensively - in liturgical practice, spiritual tradition, and law. Nor must we undervalue the fact that it was the ecumenical councils held in the East that defined the basic dogmas of the Christian faith, on the Trinity, on the Word of God Who took flesh of the Virgin Mary. To preserve this faith these Churches have suffered and still suffer much.
However, the heritage handed down by the apostles was received with differences of form and manner, so that from the earliest times of the Church it was explained variously in different places, owing to diversities of genius and conditions of life. All this, quite apart from external causes, prepared the way for decisions arising also from a lack of charity and mutual understanding.
For this reason the Holy Council urges all, but especially those who intend to devote themselves to the restoration of full communion hoped for between the Churches of the East and the Catholic Church, to give due consideration to this special feature of the origin and growth of the Eastern Churches, and to the character of the relations which obtained between them and the Roman See before separation. They must take full account of all these factors and, where this is done, it will greatly contribute to the dialogue that is looked for.
All this heritage of spirituality and liturgy, of discipline and theology, in its various traditions, this holy synod declares to belong to the full Catholic and apostolic character of the Church. We thank God that many Eastern children of the Catholic Church, who preserve this heritage, and wish to express it more faithfully and completely in their lives, are already living in full communion with their brethren who follow the tradition of the West.
Now, the problem in the United States is that some Orthodox communities have become protestantized, no longer believing in the True Presence, for example, or the Immaculate Conception. Some of these problems are the result of heretical Orthodox priests, who like some Catholic priests, bring their own brand of theology into the pulpit.
Sadly, the term Orthodox in some parts of the world covers truly protestant communities.
to be continued...