(Harvestime International Institute offers a course entitled "Spiritual Strategies: A Manual Of Spiritual Warfare" which covers the subject of the spiritual environment in detail.)
(Ang Harvestime International Institute ay nag-aalok ng kursong “Mga Stratehiyang Espirituwal: Isang Manwal sa Pakikibakang Espirituwal” na sumasaklaw ng detalye sa paksa ng espirituwal na kapaligiran.)