\tThe Truth
According to multiple sources, this story is true.
Beginning in the 1930s Arthur Stace spent his early morning hours writing the word "Eternity" in a distinctive cursive style in every doorway, on every street, and major entrance to a public area that he could find in Sydney.
For years, the citizens of the city wondered who was writing the "one word sermon" and why.
Every once in a while, someone would claim responsibility for the graffiti and the newspapers would print the stories.
In 1956, Stace was a member of the Burton Street Baptist Church, where he also served as the janitor and a prayer leader.
One day, the pastor of the church, Rev. Lisle M. Thompson, stumbled across Stace while he was writing his chalk message on a sidewalk and the mystery of the "Eternity" messages all over Sydney was solved.
Stace said that after his conversion to Christianity, he heard a sermon in which the evangelist said "Eternity! Eternity! Oh, that this word could be emblazoned across the streets of Sydney!"
In his simple way, Stace decided to do that.
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The australian classic evangelist is:
Echoes Of Eternity by John Ridley
https://www.sermonindex.net/modules/mydownloads/singlefile.php?lid=13712&commentView=itemComments