Check out a post from Keelan Cook:
We must stop thinking of evangelism in individual terms.
“Ideally evangelism is not something to be undertaken in isolation,” quip Chester and Timmis, and they are absolutely right. The work of engagement is best done in the context of community. The good news of the gospel informs us that God has created for himself a unique people. This unique community is expressed in local congregations all over the world. Christ does not simply save us out of something, he also saves us in to something.