I love these words about missional Christianity from Brian McLaren’s book, A Generous Orthodoxy.
“Missional Christian faith asserts that Jesus did not come to make some people saved and other condemned. Jesus did not come to helps some people be right while leaving everyone else to be wrong. Jesus did not come to create another exclusive religion–Judaism having been exclusive based on genetics and Christianity being exclusive based on belief (which can be a tougher requirement than genetics!)
Missional faith asserts that Jesus cam to preach the good news of the kingdom of God to everyone, especially the poor. He came to seek and save the lost. He came on behalf of the sick. He came to save the world. His gospel, and therefore the Christian message, is Good News for the whole world.” (A Generous Orthodoxy, pg. 109-110.)