Book of Leviticus
Leviticus is the third book of both the Bible, and the Torah, known as Wayiqra' in transliterated Hebrew, meaning 'And He will declare.' It was written by the Old Testament Patriarch Moses. Leviticus was written to the Hebrew people of Israel. The book has several main topics, some of which are the Jewish laws of sacrificing to God, and the work of the priests.
This book probably was written around 1300 B.C. 
- IVP New Bible Commentary 21st century edition pp 121,22