A.W. Tozer
This generation has forgotten that the gospel message does not clean up and shine the outside of a person, rather it bores into the very heart and soul of a person and radically changes that person from the inside forever.

Then he said to his disciples, “The harvest is plentiful, but the laborers are few; therefore pray earnestly to the Lord of the harvest to send out laborers into his harvest.”
Matthew 9:37-38