He was an English Christian evangelist and author who focused on the subjects of prayer and revival. He is best known for challenging western evangelicalism to compare itself to the early Christian Church as chronicled in the Book of Acts.
Leonard Ravenhill’s outdoor evangelism meetings drew such huge crowds that traffic jams occurred. He preached with such vigor and power that many of those on the streets came forward to profess faith in Christ right there on the spot.

https://signsofthetimesnews.com/l-ravenhill.html
