Good cop/bad cop
Good cop/bad cop is a routine police sometimes us when interrogating suspects. The bad cop is hostile toward the suspect. The good cop is sympathetic and sometimes even restrains the bad cop. The suspect comes to accept the good cop as his friend and sometimes will give him the information the police are looking for.
The suspect comes to think of the two cops as being opposed to each other and he naturally sides with the one who is friendlier to him. In fact they are working together. From the suspect’s point of view they are both bad cops because they are trying to get him to give them information they need. From the point of view of law abiding citizens they are both good cops because they are trying to enforce the law and fight crime.
Satan sometimes uses the good cop/bad cop strategy when tempting others to turn from the truth and follow him. Here is something written in an internet forum that illustrates this.
Ps.. after years of having to endure hearing spiritual beings speak, i have perfected the ability to determine the good from the bad.
Dark spirits can not carry out a sentence with perfect grammar, they can not string a sentence together long enough before they fall back into poor grammar without elegance, they have to make an effort to speak with a beautiful a continuous loving tone….this makes it easier to decide & determine truth from non truth. (spiritualforums.com)
The writer thinks that evil spirits are unable to speak with good grammar and therefore a spirit who does use good grammar must be good. The Bible says that Satan is able to disguise himself as an angel of light and certainly an angel of light is able to speak properly. The same thing is true of the spirits he sends to deceive us. In the above case both sets of spirits are evil and are sent by Satan to deceive him. In fact it is even possible that both groups are the same spirits. After all we can’t see what goes on in the spirit realm so we can easily be fooled.
We must test the spirits we encounter to see whether they are from God but the way to do this is not by comparing them with other spirits but by comparing their teaching with what the Bible teaches.
Beloved, do not believe every spirit, but test the spirits to see whether they are from God, for many false prophets have gone out into the world. By this you know the Spirit of God: every spirit that confesses that Jesus Christ has come in the flesh is from God, and every spirit that does not confess Jesus is not from God. This is the spirit of the antichrist, which you heard was coming and now is in the world already.Little children, you are from God and have overcome them, for he who is in you is greater than he who is in the world. (1 John 4:1-4)
I have written two previous post in which I warn about this strategy of Satan.