In church yesterday the sermon was about the Kingdom of God as opposed to the Kingdom of Satan; that is, the reign of sin. Christ’s Kingdom breaks in as a subversive power, undermining that kingdom’s rule over our lives.
We speak of God’s two kingdoms, but this one of Satan’s gets less attention, but it too is real and a factor in how we live in the other two. I suppose Satan too has an earthly and a spiritual kingdom, with the usurper aping the rule of the true King.