It could be that the information contained in the book of Genesis was obtained by all three of the above methods — some by direct revelation, some by oral transmission, and some from written records.
Võimalik, et Esimeses Moosese raamatus leiduv informatsioon on saadud kõigil kolmel ülalmainitud meetodil: osa otsese ilmutuse kaudu, osa rahvasuust, osa aga kirjalikest ajalooallikatest.