The Genesis Apocryphon is a retelling of the stories of the patriarchs in an embellished fashion.[5] It can be separated into books; the Book of Lamech, the Book of Noah and the Book of Abraham.[5] The Genesis Apocryphon is largely based upon 1 Enoch, the Book of Jubilees and Genesis and therefore was most likely written after them. Most of the stories are told in first person, written in middle Aramaic,[4] and based on biblical narratives but include other subjects and details previously unknown.[5] Although the material is typically a free reworking of biblical material, occasionally there is word-for-word translation or paraphrasing from Genesis.

Source: Genesis Apocryphon – Wikipedia