Stand therefore… having put on the breastplate of righteousness…. And take the helmet of salvation, and the sword of the Spirit,
which is the word of God. Ephesians 6:14-17 (NKJV)
When Christians get fixated on Old Testament law, it eventually causes us to feel defeated. We need to understand the finished work of the cross.
We get ourselves into all kinds of trouble when we mix law and grace, old covenant and new covenant. Since the enemy knows the Word well, he’ll use that as an opportunity to use the Word against us. He’ll grab an Old Testament law out of context and attack us with it, and if we don’t realize what Jesus did for us on the cross, then we have a piece of armour missing and we’re open to attack.
In battle, if you have a breastplate on but you’ve forgotten your helmet, where do you think the enemy will aim? The enemy will always attack you in the areas where you hold misbeliefs—areas where you haven’t sufficiently renewed your mind in God’s Word.
A spiritual attack is not a great big black cloud of demonic power rolling your way that nothing can stop. Spiritual warfare isn’t scary! After 30 or more years of pastoring and dealing with everything under the sun from demonic possession to attacks, I’ve realized that the only thing we really need to understand to deal with the devil’s attacks is what Jesus accomplished on the cross.
As you grow in your understanding of what Jesus accomplished for us, you’ll understand that the devil has absolutely no power over you and no right to do anything in your life.