“They came to draw water and filled the troughs” (Exodus 3:16).
Thomas Alva Edison, one of the greatest inventors in history, lived in a large house with a huge fence around it. Visitors had to push open a heavy iron gate in order to enter the compound and then push it back again until it clanked shut. One of Edison’s friends complained to him about the tremendous amount of energy required to open and shut that gate. With a twinkle in his eye, Mr. Edison escorted his friend up onto the roof of the house and showed him an elaborate mechanical device made up of levers and pulleys and pumps. “What you don’t know,” said Edison, “is that everyone who…
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