4:20 bare Jabal. Lamech’s children were given names associated with their talents: “Jabal” seems to mean “wanderer,” “Jubal” means “sound” and “Naamah” means “pleasant.” “Tubal-cain” is of uncertain meaning but is associated etymologically with the Roman God Vulcan. The inventions of these talented progeny no doubt contributed greatly to the wealth and power of Lamech’s clan, and to the increasing materialism of the Cainite civilization in general.