Late Christian evangelist David Wilkerson's legacy lives on, as Teen Challenge continues to transform lives and help people break addictions.

The Christian Post's Leonardo Blair joins Billy Hallowell to explain how Wilkerson ended up having an encounter that "would ultimately lead him, with the help of his younger brother, Don Wilkerson, to start a street ministry in 1958 targeting young drug addicts and gang members in New York City, which became Teen Challenge."

Listen to the powerful story.