Rapidly changing trend of times, due to over uniformity and diversity is creating social imbalance and is suffering agony as a result. One reason for this is shaking standard in the right faith and fading essence. Present Christianity is embracing wounds from numerous divisions. Therefore, alliance and unity of churches have become an utmost necessity and importance more than at any other times. However, one point of concern is that indiscreet alliance between denominations and religions is damaging the right faith and church view regarding God. "Let's go together. Let's service together. Let's get together. We are one." Such slogans are all very good. However, we should be careful of alliance that surpasses walls of identity and doctrine of the church. Alliance which is not based on theological truth and right confession of faith destroys identity of faith. Disciple Paul emphasized that we have to unite based on the right foundation which is the confession of faith in Jesus Christ. "For no one can lay any foundation other than the one already laid, which is Jesus Christ.(1 Corinthian 3:11)."
WCC's BEM documents or Confession of one faith for World Church is helping to achieve efficiency and visibility of alliance. I have examined the documents and identified difference between early church's ecumenical movement and WCC alliance movement. In other words, I have compared Trinitarianism and church theory which are the most important foundations of faith. Ecumenical movement of early church was biblical and evangelical based on right theology. Also it had right doctrine and confessions of faith. Koinonia of early church community was based on strict faithful devotion and confession. Although the church has systematic regulations, it is a community based on faith rather than an organizational community. However, World Council of Churches is growing by tolerating diversity. Not only Korean protestant churches but a large number of churches in many countries around the world have still not joined WCC. This is because WCC has shown overly active participation in politics and pluralism of religion rather than spreading the gospel and life based on faith. Unity movement of WCC has positive image of restoration of community and social peace and wants world wide church to alliance together with Confession of One Faith as the theological common denominator. However, Jesus said in the Bible that 'becoming one' is an alliance built on God and right confession of faith regarding the church. This is different from alliance movement advocated by WCC. If we possess right confession of faith, we can defend our faith with our life even in the face of hardship and persecution. Churches should possess the right view of salvation based on Jesus Christ's dying on the cross and resurrection. Churches should be united based on biblical confession of faith which is the foundation from which God built the church. Of course, churches should have unchanging interest in society and services to the world and with the heart of Jesus, should care for the poor and the sick, the socially excluded and the wounded as well as nations under oppression. "We believe in the holy catholic church." We have to follow our faith with this clear confession. Right alliance between churches and Christianity is a matter of the life. Churches should, as there are many limbs in one body, unify in one body by maintaining the unity of the church. 'We believe in the holy catholic church' in Apostles Creed, this holiness of the holy church should be guarded with the words in the Bible and right theological truth. Because churches are united under Confession of One Faith, churches should maintain the identity and purity of a church as early churches did. Alliance under the spirit of martyrdom in right truth should come before social changes of today. We have to embrace mind of our God. There should be alliance and unity as the fruits of deep internal faith for the soul. However, WCC's Confession of One Faith was different from Trinitarianism and church theory from the perspective of pure ecumenical council of early church and the bible.
Paul used the term "We' limitedly within the right theology and faith. Churches of today should of course input more effort in alliance movement based on the right theological and biblical faith. Through this research, I hope new efforts for church unity will arise inside churches for a wholesome alliance movement which is needed in this day. The right theology and biblical unity of churches will cover the whole world with the love of Jesus Christ on the cross in this chaotic era and eschatological state of the society.