On Wednesday mornings I am in a study with a group of men. For the past several weeks we have been studying Satan. Why? Because it is important to know your enemy.
1 Peter 5:8 commands us to be alert for him. James 4:8 and Ephesians 6:10ff tell us how to do battle with him. If he were not active and did not exist the Holy Spirit would not have inspired Peter, James, and Paul to pen those warnings.
A Place to Start
If you need a place to start here is a list of references for the places in the Bible that Satan or devil crops up. Skim through them and see what the Word says about him.