Who wrote the first chapters of the Bible?

Answer 1

Moses

Although the text of Genesis makes no claim about authorship, the traditional Jewish, and later Christian, belief was that the five books of the Torah were dictated by God to Moses on Mount Sinai. For a number of reasons this is no longer accepted by the majority of modern biblical scholars, and contemporary academic debate centres instead on the proposal known as the documentary hypothesis. This postulates that Genesis, together with the other four books, is a composite work assembled from various sources. These sources are:[82]