Methusaleh gave birth to his son Noah. Noah built the ark God commanded him to build before the world was destroyed by the flood. Methusaleh lived 969 years. If you "do the math" you will discover that Methusaleh died the very year that the flood came. Did Methusaleh die in the flood? If so, why was he not on board the ark?
What a perplexing question! Yet, this is by no means the only passage in Genesis that has perplexed scholars. Mark Lanier explores some of these perplexing (and not so perplexing) issues that occur in the genealogies, floods, and towers of Genesis.