This book is naturally divided into two great parts - the first which narrates the creation; the second which narrates the development of the things created from the beginning to the deaths of Jacob and Joseph. The second great part of Genesis consists of two main divisions - the one detailing the course of events before the deluge, the other recounting the history after the flood.
The book of Genesis, has its name from the title it bears in the Septuagint, which signifies the book of the Generation; but it is called in Hebrew Bereshith, “In the beginning,” from its initial word.
The three primary names of Deity, Elohim, Jehovah, and Adonai, and the five most important of the compound names, occur in Genesis; and that in an ordered progression which could not be changed without confusion.
Of the eight great covenants which condition human life and the divine redemption, four, the Edenic, Adamic, Noahic, and Abrahamic Covenants are in this book; and these are the fundamental covenants to which the other four, the Mosaic, Palestinian, Davidic, and New Covenants, are related chiefly as adding detail or development. Genesis enters into the very structure of the New Testament, in which it is quoted above sixty times in seventeen books. In a profound sense, therefore, the roots of all subsequent revelation are planted deep in Genesis, and whoever would truly comprehend that revelation must begin here. The inspiration of Genesis and it character as a divine revelation are authenticated by the testimony of Christ (Mat_19:4-6; Mat_24:37-39; Mar_10:4-9; Luk_11:49-51; Luk_17:26-29; Luk_17:32; Joh_1:5; Joh_7:21-23; Joh_8:44; Joh_8:56).
The events recorded in Genesis cover a period of 2,315 years (Ussher).
So far as the plan of the book is concerned, the historical contents are divided into ten groups, with the uniform heading, “These are the generations” (with the exception of Gen_5:1 : “This is the book of the generations”); the account of the creation forming the substratum of the whole. These groups consist of the Tholedoth: 1. of the heavens and the earth (Gen 2:4-4:26); 2. of Adam (Gen 5:1-6:8); 3. of Noah (Gen 6:9-9:29); 4. of Noah's sons (Gen 10:1-11:9); 5. of Shem (Gen