The preacher placed two identical jars on the table next to the pulpit.
"These jars came from the same factory, were made of the same materials, and can hold the same amount. But they are different," he explained.
Then he upset one of the jars and it oozed out honey. He turned over the other jar, and vinegar spilled out.
"When a jar is upset, whatever is in it comes out. Until the jars were upset, they looked alike. The difference was within, and could not be seen. When they were upset, their contents were revealed."