John is a wonderful Gospel, martyr. Should be a great study.
Some thoughts that I have:
We either abide in Christ or we abide in Satan. There is not a third choice. You cannot abide in yourself, since self is associated with the nature of Satan. Anything apart from Jesus Christ can only be associated with Satan. Jesus said, that we are either for Him or against Him. There is not a third choice. Never has been. Blessing or Curse, Life or Death, Good or Evil. Only two choices.
And we abide by relationaly (with the heart) believing and trusting and relying on God's Word spoken to our hearts. Or we believe relationally, the lie of the Devil. Adam and Eve struck up a relationship with the Devil the moment they decided to believe his word over God's word. And that is why our Father is either God or the Devil. Again, only two choices. Jesus even told the Pharisees "you are of your father the Devil". The word "Father" connotates "relationship" and Jesus was actually saying that they had a relationship with the Devil and not God and that really incensed them. Remember, it was the Pharisees that said, "He has a demon", speaking of Jesus.
The Serpent spoke to Eve and she decided to believe his lie, thus abiding in the counterfeit truth of the Serpent. She and Adam then took on the character of Satan merely by believing his lie. Who you believe is who you abide in and who you abide in is whose nature and character you take on. We are either conformed to the image of Jesus Christ or the image and likeness of Satan. That is why the truth is so important and it will set us free from abiding in the "spirit that now worketh in the children of disobedience".
This verse highlights that the unbeliever is abiding in the prince of the power of the air.
Eph 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:
Eph 2:3 Among whom also we all had our conversation in times past in the lusts of our flesh, fulfilling the desires of the flesh and of the mind; and were by nature the children of wrath, even as others.
This is why it is so important to abide in Christ. To abide in Christ is to refuse every lie that masquerades as the truth and to cling to truth as it is progressively revealed throughout our Christian walk to us by God's Spirit.
Something interesting about the Gospel of John is that he has far more references to the Holy Spirit than the other Gospels and talks about more spiritual realities such as the new birth, the water of life, the bread of life, the light of the world, the good shepherd, and the vine and the branches. Ninety-two percent of the material in John's gospel-record is not found in any of the other three synoptic gospels.
In addition, martyr, I like this from James Fowler.
The Confrontation of the Gospel and Religion
In the harmonization of the gospel-records we can perhaps most clearly perceive that in the course of His ministry and the revelation of Himself, Jesus is found to be in constant conflict and confrontation with the prevailing religion of the Palestinian region. Swiss theologian, Karl Barth, has noted most explicitly that "the revelation of God is the abolition of religion."1 Is it any wonder, then, that the presentation of God in man in Jesus Christ should contrast with the message and methods of the Jewish religion in the first century?
Christianity is not religion! The most accepted etymological derivation of the English word "religion" recognizes the root of the word in the Latin word religare, which means "to bind again" or "to tie back." Jesus did not come to bind, fasten, tie, or attach us to anything or anyone. He came to set us free to be functional humanity in the fullest sense, saying, "you shall know the truth, and the truth shall make you free" (John 8:32), for "if the Son shall make you free, you shall be free indeed" (John 8:36). Paul likewise indicates that "it was for freedom that Christ set us free" (Gal. 5:1), for "where the Spirit of the Lord is, there is liberty" (II Cor. 3:17).
Jesus Christ did not come to found another religion. He came that we might have His life, and experience such in abundant human expression (John 10:10). The Christian gospel is the presence and dynamic of the life of the risen Lord Jesus being manifested in the behavior of receptive believers to the glory of God.
Such freedom of life and worship was alien and foreign to the strictures and structures of Jewish religion that existed in the first century. It can be reasonably argued that Judaism in the first century was representative of religious perversion at its worst. Every form of legalism, exclusivism, moralism, etc. was rampant in their religion. This provided, though, a perfect environment to exhibit the radical antithesis and ultimate contrast to what Jesus came to reveal in Himself, the "good news" of Christianity.
Here is the rest of it, if you would like to read it.
Jesus Confronts Religion
http://www.christinyou.net/pages/confrel.html
Pilgrim