You are the salt of the earth

Scripture reference

Matthew 5:13 (ASV 1901)

13Ye are the salt of the earth: but if the salt have lost its savor, wherewith shall it be salted? it is thenceforth good for nothing, but to be cast out and trodden under foot of men.

Stories

Corrie ten Boom speaks to a group of students, and presses them to take seriously their role in evangelism.
Billy Graham has the opportunity to preach on Matthew 5:13 in communist North Korea.