Let’s look at purgatory for example. The Eastern Churches both Orthodox and Catholic believe in purification but what we reject is the need to make expiation for sin after death(purgatory). It can be summed up like this. There are two levels of theology: theologia prima (which the Greeks call theologia); and theologia secunda (which the Greeks call theoria). The former is the foundational belief of the Church, as embedded in its rule of prayer, which is to say, its liturgical texts, in keeping with the maxim “lex orandi, Lex credendi”.
Father Taft writes of theologia prima:
“Theologia prima, or first-level theology, is the faith expressed in the liturgical life of the Church antecedent to speculative questioning of its theoretical implications, prior to its systematization in the dogmatic propositions of theologia secunda or systematic reflection on the lived mystery of the Church. Liturgical language, the language of theologia prima, is typological, metaphorical, more redolent of Bible and prayer than of school and thesis, more patristic than scholastic, more impressionistic than systematic, more suggestive than probative. In a word, it is symbolic and evocative, not philosophical and ontological.”
And with regard to the emergence of theologia secunda:
“Now although it is perfectly obvious, indeed necessary, that doctrine will acquire theological refinements, especially in the heat of dogmatic controversy, it should be equally obvious that such refinements cannot be read back into texts composed long before the problems arose which led to those precisions. To pounce upon ancient anaphoral texts and exploit them tendentiously in today’s theological controversies is an anachronistic procedure devoid of any legitimacy."
With regard to the matter of the necessity purification of the soul, and the efficacy of prayer for the dead, the Eastern Churches have chosen NOT to speak dogmatically at the level of theologia secunda, but are content to accept the theologia prima found in our liturgical texts for the funeral and memorial rites. Hence, we believe that (a) the souls of the departed require purification before entering into the Kingdom of God; and (b) that prayers for the dead are efficacious to that effect. Nothing more is, or should be required, because this is the universal Tradition of the undivided Church.
Purgatory represents the theologia secunda of the Western Church, and it is their prerogative to develop doctrine as they see fit. What they cannot do is declare unilaterally that their doctrine, and especially their mode of theological expression, is incumbent upon and normative for all. As Eastern Catholics, we respect the doctrines of the Latin Church as long as they are compatible with ours on the level of the theologia prima, but we also insist on the right to our own modes of theological expression, and to develop our own theologia secunda within our own Tradition.
ZP