In this third volume in a series on the devil and demons, I want to teach particularly about demon oppression and the operation of the spiritual gift of discerning of spirits (1 Cor. 12:10). We know from the Scriptures that demons have to do with the fall of Satan. God did not create the devil as he is now. We read in Ezekiel 28:15 that he was perfect until iniquity was found in him. God did not create him a devil. We read that he was lifted up because of his beauty (Ezek. 28:17).
We also read that in the beginning of time, before man was created, Satan ruled and had a kingdom. He said he would exalt his throne (Isa. 14:13,14). It is possible that demons on the earth today could be the spirits that Satan ruled upon the earth in that pre-Adamic kingdom. In my opinion, this is the case. Remember that when God made man, He told him to be fruitful and multiply and to replenish the earth. We do not have as much light on this subject as we would like, but we have all we need to know.