Okay little buddy, Methuselah is a story from a long time ago in a book called the Bible. It's about a man who lived a really, really long time, even longer than your great-great-great-great-great-great-grandparents! His name was Methuselah, and he lived for 969 years. That's a really, really, really long time to live, way longer than anyone lives now! We don't know exactly why he lived so long, but in the story it says he was a good man, and he had a son named Lamech who was the father of Noah. Have you ever heard of Noah? He's the guy who built the big boat and saved all the animals from a big flood! Anyway, that's the story of Methuselah. He lived a super long time and was part of a really important family in the Bible.