As part of it! That is, the book of Exodus contains important parts of the Torah and most of the rest is in Leviticus. However, the five books of Moses, the Pentateuch, are commonly referred to as...
Some sources indicate that it was given by Moses in 1280 BCE. The first written books are indeterminate. This date is based on what is known as the 'late date' for the Exodus, the Torah being written...