I m sure that the sight of people under the power and control of evil must repulse God. But God responded with mercy. But God responded with love. He gave us the free gift of salvation which we receive by trusting in that gift, by having faith in the saving power of Jesus. That free gift transforms.
Believers are no longer dead in sin.
They are no longer controlled by the evil one. They now have a new life in Christ. They have been raised from death to life with Christ Jesus. Alive from the dead by the power of the risen Christ, that s what a Christian is. A Christian is alive from the dead by the power of the risen Christ.