And I said unto you, I am the Lord your God; fear not the gods of the Amorites, in whose land ye dwell: but ye have not obeyed my voice.
There is a cycle that occurs repeatedly in the book of Judges. The cycle could be stated this way: Rebellion – Repentance – Revival. The book follows that pattern from beginning to end. It follows the warning that God has given to His people. Obedience brings blessing and disobedience brings punishment.
Reading the context of this verse you will notice that God recounts the many times He has been gracious to Israel, only to have them reject Him once again. Most people live their life just like that. They never seem to have an interest in God at all until they need something. There is NO God as far as they are concerned until there is some tragedy or inconvenience in their life and then they will cry unto the Lord (v.6-7).
What more proof does God need to give us? He sends us messengers (v.8a), He reminds us of the many victories He has provided (v.8b-9), and He is willing to do the same (v.10a), BUT we have one problem: ye have not obeyed my voice (v.10b).
You don’t have to fear anything or anyone, when you are living in obedience.