Read what Mark Dever, pastor of Capital Hill Baptist Church in Washington, DC says:
An essential part of the gospel is that it is catholic—that is, the Good News is given to all people. And the church the Holy Spirit creates is catholic.
Putting the matter like this may make some Christians squirm. Many Protestants affirm, either weekly or semi-regularly, the Nicene Creed, proclaiming, "We believe in one, holy, catholic, and apostolic church," but many balk at that word, catholic. (That's why in my own congregation, we use the word universal rather than catholic, because the original Greek term katholikos means "whole, entire, universal.")....
.....there is much more to be said than that "catholic" simply means "universal." Let me rehearse all too quickly the history and biblical theology behind the term, why it's included in the great summary of the Christian faith, and how it challenges churches today.