An Israeli museum on Thursday unveiled what it says in the oldest known Jewish prayer book in the world, dating back to the 9th century A.D. The prayer book, about 10 centimeters (four inches) long and seven centimeters wide, is written in Hebrew, contains about 50 pages, and is still in its original binding. It was donated to the Bible Lands Museum in Jerusalem by Oklahoma businessman Steve Green, a devout Christian and owner of one of the largest collections of rare biblical artifacts in the world. Green’s family controls the Hobby Lobby crafts store chain, which won a closely-watched...