One day, the pastor noticed the church needed painting. He went into town, bought one gallon of white paint, and started to task of painting the church.
Finishing the first side, he noticed he had already used half gallon of paint. Not wanting to go back into town he looked in an old shed and found a gallon of paint thinner. He filled up the paint can with as much thinner as it would hold and continued painting the church.
It worked out great. He finished the remaining three sides with that last half gallon of paint.
That night, it rained hard. The next morning the pastor stepped outside of the parsonage to admire his work and noticed the first side of the church he painted looked great but the paint on the other three sides had washed away.
The pastor looked up in sky in anguish and cried out, "What shall I do?"
A voice from heavens came booming back, "Repaint, and thin no more!"