The Depths of Satan
The Bible says the devil is real and a force in the world today: Acts 5:3; John 8:44; 1 Peter 5:8; Luke 22:31; 2 Corinthians 2:11; John 13:27.
Psychological profile of mass killers:
1) Grievance: They feel they have suffered a loss (imaginary or real).
1 John 3:
 Anyone who hates a brother or sister is a murderer, and you know that no murderer has eternal life residing in him.
 For it is from within, out of a person’s heart, that evil thoughts come—sexual immorality, theft, murder…
3) Anger: They are very angry about grievance and hate.
4) Blame: They blame others for their condition and the way they feel.
5) Notoriety: Often they are life’s losers who seek notoriety.
6) Psychotic: Mass killers are often psychotic (delusions and imagining things).
7) Psychopath: Psychopaths have no inner awareness of right and wrong.
Mass killers do not have defective genes. No one forces them to do what they do. They are not justified in what they do. They are not triggered by some event that forces them to do bad things.
Just as drugs do not cause addiction, guns do not kill people. People kill people and people choose to abuse drugs and alcohol.
If you take a person’s drug away he will often choose another drug that is more readily available. If you take an evil person’s gun away he will find another way to kill.
The Las Vegas killer could have killed more by flying a plane into the crowd. He was a pilot and wealthy so he could have done this.
An Islamic mass killer in France killed 86 and injured 458 by driving a truck through a crowd.
The Las Vegas killer did not have bad genes but over a period of years he made bad choices.
 But unto you I say, and unto the rest in Thyatira, as many as have not this doctrine, and which have not known the depths of Satan, as they speak; I will put upon you none other burden.  But that which ye have already hold fast till I come. (KJV)
 Now I say to the rest of you in Thyatira, to you who do not hold to her teaching and have not learned Satan’s so-called deep secrets, ‘I will not impose any other burden on you,  except to hold on to what you have until I come.’ (NIV)
 But I say to you, the rest who are in Thyatira, who do not hold this teaching, who have not known the deep things of Satan, as they call them—I place no other burden on you.  Nevertheless what you have, hold fast until I come. (NASB)
The depths of Satan appears to be the teaching of the false prophet Jesus calls “Jezebel” earlier:
 To the angel of the church in Thyatira write: These are the words of the Son of God, whose eyes are like blazing fire and whose feet are like burnished bronze.  I know your deeds, your love and faith, your service and perseverance, and that you are now doing more than you did at first.
 Nevertheless, I have this against you: You tolerate that woman Jezebel, who calls herself a prophet. By her teaching she misleads my servants into sexual immorality and the eating of food sacrificed to idols.  I have given her time to repent of her immorality, but she is unwilling.
Some think the prophet taught the church they could attend the pagan festivals or acknowledge Caesar as god if called to. They would justify this be arguing the Christian needs to know the deep things Satan so they could know better how to defeat him.
I disagree. I would argue the false teaching of the prophet would lead the church closer to the works of Satan and harm them.
The point: Sin changes people for the worse.
The closer we are to Satan the more we can be harmed in our thinking and religious life.
There are deep things of Satan as there are the deep things of God:
1 Corinthians 2:
 …these are the things God has revealed to us by his Spirit. The Spirit searches all things, even the deep things of God.
2 Timothy 2:
 Opponents must be gently instructed, in the hope that God will grant them repentance leading them to a knowledge of the truth,  and that they will come to their senses and escape from the trap of the devil, who has taken them captive to do his will.
 Simon, Simon, Satan has asked to sift all of you as wheat.  But I have prayed for you, Simon, that your faith may not fail.
 For although they knew God, they neither glorified him as God nor gave thanks to him, but their thinking became futile and their foolish hearts were darkened.
 Therefore God gave them over in the sinful desires of their hearts to sexual impurity for the degrading of their bodies with one another.
The point: God will abandon those who give themselves over to sin.
Getting close to Satan has consequences for people. Those who are abandoned by God are susceptible to being taken over by Satan to one degree or another.
The ultimate expression of sin is death. Not just spiritual death but also physical death. This is always where Satan wants to lead people. In some people, the influence of Satan can lead people to kill others.
Consider the sin of Judas who betrayed Christ. At the Last Supper, the Bible says “Satan entered into him” (John 13:27).
Judas betrayed Christ and caused his death and then took his own life.
 Then Satan entered Judas, called Iscariot, one of the Twelve.  And Judas went to the chief priests and the officers of the temple guard and discussed with them how he might betray Jesus.
The pattern of those who purport to plumb the depths of Satan is one of bondage, not liberty.
2 Peter 2:
 They promise them freedom, while they themselves are slaves of depravity—for “people are slaves to whatever has mastered them.”
 Don’t you know that when you offer yourselves to someone as obedient slaves, you are slaves of the one you obey—whether you are slaves to sin, which leads to death, or to obedience, which leads to righteousness?
J B Myers