George Foreman, the former heavyweight boxing champion writes in his book "God in My Corner":
In 1974, before I went to Africa to fight Muhammad Ali, a friend gave me a Bible to take along on my trip. He said, “George, keep this with you for good luck.” I believed the Bible was just a shepherd’s handbook, probably because the only verse I knew was “the Lord is my shepherd.” But I was always looking for luck, so I carried that Bible with me. I had lucky pennies and good luck charms, so now I added the “lucky” Bible to my collection of superstitious items.
After I lost the fight, I threw the Bible away. I never even opened it. I thought, The Bible didn’t help me win, so why do I need it? I thought I’d get power simply from owning it; I didn’t realize that I needed to read it and believe what it says. Since then, I’ve come to understand that the Bible is my road map, not my good luck charm.
(George Foreman, God in My Corner, Nashville: Thomas Nelson, 2007, p.91)