Study these Bible texts:

• ማቴዎስ 13፡24-30፣ ዘፍጥረት 3፣ ኢዮብ 1-3፣ ኢሳይያስ 14፣ ሕዝቅኤል 28፣ ዮሐንስ 8፡44፣ ራዕይ 12፣ ራዕይ 21-22

Ellen G. White Writings:

• Patriarchs and Prophets – Chapter 1: Why was Sin Permitted?
• The Great Controversy – Chapter 29: The Origin of Evil
• The Great Controversy – Chapter 30: Enmity Between Man and Satan

Bible Commentaries:

• SdaBc-3 (18) Job
• SdaBc-4 (23) Isaiah
• SdaBc-4 (26) Ezekiel