Because saving faith only comes through the hearing of the Word of Christ. (Romans 10:17, NASB)
You and I won't agree on the doctrines that divide Catholics and Protestants. The closest we will come is that I have an uncle that is a bishop and another that is a priest in the RC church. I am sure that they would agree with you.
Mother Teresa was not a preacher, nor an evangelist. And the "Word" is much much more than mere "words".
I feel certain that Willow Creek Church is not lacking for words. In my opinion, neither are the poor and dying in the slums of Calcutta.
They knew the Word of Christ through her.
"By this all men will know that you are My disciples, if you have love for one another."
Thanks very much for your reply, and it's interesting about your uncles. How did you go so far astray?
:)