[S]ome Christians accept the notion of ‘territorial spirits’ as readily as pagans, the only difference being that they believe that such ‘spirits’ should be confronted through authoritative prayer and commands issued ‘in the Spirit’.
– Source: Territorial Spirits, by Charles Hoole, Evangelicals Now, Mar. 1998
The concept’s main proponent is C. Peter Wagner, who has influenced countless Christians — mainly within Evangelical, Charismatic and Pentecostal traditions — to wage spiritual warfare against what they view as ‘spiritual strongholds.’ Many Christians have also been influenced by descriptions of angels, demons, and spiritual warfare in the fictional books of Frank E. Peretti. Simplified examples of the battle against territorial spirits may include believers praying against the ‘Spirit of Lust’ over Amsterdam’s Red Light District, against a ‘Spirit of Greed’ over portions of Las Vegas, or ‘Spirits of Witchcraft’ over sections of New Orleans.