[The barges were made airtight]

[Mormon tried to teach the Nephites about Christ]

[He had tried to teach them to have hope through Christ]

[Mormon wrote about the wickedness of the Nephites]

[Mormon led the Nephites to Cumorah]

[Mormon was getting old]

[He gave the plates to Moroni]

[The Lamanites killed all but 24 Nephites]

[He knew the Nephites would not win the war]

[He wanted everyone to know about Jesus Christ]