Hopefully making theology simpler to understand! (2 Corinthians 1:12)

For we do not wrestle against flesh and blood, but against the rulers, against the authorities, against the cosmic powers over this present darkness, against the spiritual forces of evil in the heavenly places.

Ephesians 6:12, ESV

We do wrestle against our own fleshly desires, but our war is not against each other. We rely on the Holy Spirit to change us, change others, and fight against spiritual attacks in the name of Jesus.