Immunization

“The tragedy of many religious audiences is that they have become immunized by much listening to speeches. Wise Christian leaders will not give their precious time to saving the saved when they have alternative opportunities in life outside the purview of the Church.”—Company of the Committed, pages 80-81

<idle musing>
Hey! That sounds "missional," doesn't it? I wonder what they called it back in the 1960s? :)
</idle musing>