For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places. Ephesians 6:12
The brothers and sisters who are trapped in dullness and rebellion are victims of the opposing forces in the spiritual. They are victims, not mainly perpetrators. If we see them as evil, we are thinking evil of them. Humility is not as possible for some because of opposing forces, demonic principalities. Jesus sets us free, He is the only way out. Our understanding does not matter here, we must love the backsliding, proud, sinful brother. Love does not mean partaking in their sins, agreeing with their sin. We should also be following the protocol of 1 Corinthians 5:9-13. This does not mean we do not love them, this is a spiritual protection for ourselves – and, in a way, a spiritual protection for that brother. Love is trusting God with them, praying for them daily, helping them when they are in need – regardless of their sin.
In Christ, your sin is paid for, but any part which is not surrendered to Christ is open for devils to torment. Though the punishment for your sin is taken, eternal death, you will be tormented by the sins you hold onto, cherish and choose to commit on earth. Sin brings suffering and torment and is agreement with devils.