What is the origin of the church? This article explains that the church did not originate with Pentecost.

God refers to the church as a mystery. What is this mystery? The mystery is that from the beginning God intended to gather His church from all nations and tribes. He wanted His church to be international (a universal church), and not limited to the tribe of Israel. This mystery was made clear in Christ and forms the heart of mission work.

When a church identifies herself as the only church which holds to the truth of scripture it is refered to as denominational isolationism. This article shows the dangers of denominational isolationism; namely, that it leads to separatism and doctrinal pride. Confessing one holy catholic church sets the church free from such isolationism. 

To confess the catholicity of the church is to confess that the church is a body that is universal in extent, gathered throughout the whole human race out of all the nations of the world. Based on this the article evaluates the claims of the Roman Catholic Church to catholicity. It also shows how the confession of a catholic church is an antidote to racism.

In this article the catholic (universal) character of church is discussed. The relation of the church to the Triune God also receives some attention.