Well considering I believe that demons do not have effect on people, and Satan was defeated, yet humans have and effect on humans.
James 1:13 When tempted, no one should say, “God is tempting me.” For God cannot be tempted by evil, nor does He tempt anyone. 14 But each one is tempted when by his own evil desires he is lured away and enticed.
The desires comes from his own self, when they are tempted by doing something that is bad.
(Humans can influence this, yeah lets go steal this, yeah lets go kill this guy, yeah lets go rob this bank.)
Like stealing, or lying, or hating someone and not forgiving them.
Have you never had an evil thought in your life, that just came from your own mind? I have many times.
We can't blame Satan for everything, sometimes its just our own fault, and we can even sometimes be our own worst enemy.
Thoughts that come about not even being worthy of walking with God, or talking to God, or Why would Jesus Christ forgive, these are thoughts that come from our flesh, unless we able to overcome them by the holy spirit., and trusting what God's word has said about these things. Because God does Love, and so Does Jesus Christ.
But these desires can change, if we turn to God, and the Lord Jesus Christ.
I hope I was able to expound on this well enough for you to maybe see where I come from on this.
2 Corinthians 10:5 5 [FONT="]casting down arguments and every high thing that exalts itself against the knowledge of God, [/FONT][FONT="]bringing every thought into captivity to the obedience of Christ,[/FONT][FONT="][/FONT]