Grass On The Path?

Paul Tan tell about how The earliest African converts to Christianity were very faithful in their private devotions. Each one reportedly had separate spots in the woods to pour out his heart to God. And the path would become hard and packed into the forest to each of their places. when someone began to slip in his prayer and devotion it was obvious for the grass would begin to grow up on his path. The Africans would encourage them by saying kindly,
"Brother, the grass grows on your path…."
"Brother, The Grass Is Growing"

"The earliest African converts to Christianity were earnest and regular in their private devotions. Each one reportedly had separate spots in the thicket where he would pour out his heart to God. The several , paths to these little Bethels became distinctly marked; and when anyone began to decline in devotions, it was soon apparent to others. They would then kindly remind him, saying 'Brother, the grass grows on your path yonder."

(Paul Lee Tan Encyclopedia of 7700 Illustrations pg 1034, Assurance publishers 1990)