Unity, catholicity, holiness, and apostolic comprise the attributes of the church. This article explains each of these attributes and the implication each has for church life.

Looking at the meaning of the word catholic, this article looks at the call to church unity in the light of the divisions within the Reformed churches. The article asks the question, "What does it mean to confess the catholicity of the church?"

This article is about the catholicity of the church (universal church). The author also looks at the responsibility this belief places on the believer.

This article first look at the modern ecumenical movement and false church unity, and then looks at true catholicity and true church unity.