Part 1
Let's roll up the Word sleeves and crack open some scriptural nuggets:
Mark 4:
15 And these are they by the way side, where the word is sown; but when they have heard, >>>Satan cometh immediately,<<< and taketh away the word that was sown >>>in their hearts.<<<
If we pay attention to the above, we should see man and satan in the same set of shoes. That means there are TWO PARTIES to engage, man and satan, not "just man." This is shown for example with satan speaking from Peter. Was it just Peter? Nope. It was satan and Peter. Not satan as Peter, but satan as satan, Peter as Peter. 2 PARTIES, just as Jesus shows in Mark 4:15.
There are many similar examples. Most believers have a hard time accepting this, but Romans 11:32 says GOD bound "everyone" with disobedience. Same as Mark 4:15
Romans 11:
32 For God has bound everyone over to disobedience so that he may have mercy on them all.
That "disobedience" is a spirit that is not the person, but is of satan, the god of this world, just as Mark 4:15 shows.
Ephesians 2:
2 Wherein in time past ye walked according to the course of this world, >>>according to the prince of the power of the air, the spirit<<< that now worketh in the children >>>of disobedience:<<<
Same as Mark 4:15 and same here:
2 Corinthians 4:
4 In whom >>>the god of this world hath blinded the minds<<< of them which believe not, lest the light of the glorious gospel of Christ, who is the image of God, should shine unto them.
IF the "god of this world" is not blinding your mind to the obvious, you'll see the obvious. There is more than just an individual involved. There is the individual, and there is the spirit of disobedience, which is satan, the god of this world, influencing the mind and heart, internally. Stealing, killing, destroying.
And yes, this is a UNIVERSAL to mankind condition, even with the so called "saved." Here is Paul's open confession to the fact:
2 Corinthians 12:
7 And lest I should be exalted above measure through the abundance of the revelations, >>>there was given to me<<< a thorn >>>in the flesh, the messenger of Satan<<< to buffet me, lest I should be exalted above measure.
Believers who haven't "seen" yet and are blinded will insist that the messenger of satan is a sickness or bad eyesight or just about anything BUT the messenger of satan.
Paul wraps this 2 fold bundle up nicely again, here:
Romans 7:
21 I find then a law, that, when I would do good, >>>evil is present with me.<<<