As far as various Protestant denominations are concerned, in view of the fact that they are very divided with respect to doctrines — there being as many Protestant “Faiths” as there are, so to speak, individual Protestants — “union” for them cannot consist in union in one and the same Christian Faith, but only in united activity in the pursuit of certain goals of a secular nature. This is why they keep postponing an answer to the request made by traditionalist Orthodox Christians for a clear, unambiguous definition of the term “union of the Churches”. They say, “Let us first seek unity, that is, united action, in the secular realm, and after this we can proceed to discussions of “union” in the Faith.
This approach obviously ignores Christ’s injunction: “Seek ye first the Kingdom of God, and His righteousness; and all these things shall be added unto you” (Mat. 6:33). The Kingdom of God is not a kingdom of secular aims and values, but a Kingdom of spiritual Truth. For as Christ again says, “Ye shall know the Truth, and the truth shall make you free” (John. 8:32).
Father Florovsky has made a very apt remark on this approach in his book Ecumenism: A Doctrinal Approach. He says: “Would it not be an absurd situation, if Christians could have been at one in secular unessentials and still at variance in essentials? Would it not have suggested that all doctrinal or confessional disagreements were of no vital importance whatever? (Ecumenism Examined: A Concise Analytical Discussion of the Contemporary Ecumenical Movement, p. 61)