Gnostic Gospel
Let me start of by saying the Gnostic gospels are forgery. Scholars of both secular and religious orientation acknowledge this. It does not have the water marks of orthodox Christian style, message, and continuity of the canonical scriptures. Often times forgeries are granted credibility due to fading memories of the facts. You see this often in history how strange, mocked, and debunked rumors of the day, centuries latter, become historical eye opening "bomb shells".
A religious sect known as Gnostics were very hostile to early Christians and mocked them in literature frequently. This is basically an overhaul of Christian values and beliefs by Gnostics. You have the gospel of Judas, The gospel of Nichodemas, The Book of Enoch, and all manner of forgeries. They have infant gospels of Jesus as a child killing classmates, declaring women not to be worthy of life and needing to be made male. There were forgeries plaguing Paul in his day, give a read...
2 Thessalonians 2:2-3
That ye be not soon shaken in mind, or be troubled, neither by spirit, nor by word, NOR BY LETTERS AS FROM US, as that the day of Christ is at hand. LET NOT MAN DECEIVE YOU you by any means: for [that day shall not come], except there come a falling away first, and that man of sin be revealed, the son of perdition;
And again...
Galatians 6:11
Ye see how large a letter I have written unto you with MINE OWN HAND.
This is why Paul had a special sign off, like, "The grace of our Lord Jesus Christ be with your spirit," and other variants.
Now you may say to yourself these Gnostic sayings are true spiritually. I don't believe they are, however I can say they don't follow in the spirit of the canonical scriptures. If you believe in scripture, as I do, Jesus warns about the Gnostic sect of the Nicolaitans, even going so far as to say he hates their works.
Revelation 2:6
But this thou hast, that thou hatest the deeds of the Nicolaitans, WHICH I ALSO HATE.
Revelation 2:15
So hast thou also them that hold the doctrine of the Nicolaitans, WHICH THING I HATE
Now let me address the issue the location of the Kingdom of God. If the kingdom of God is IN US just by virtue of being human why does Jesus of the canonical(true) scripture seems to have a different idea, look at the verbs and prepositions!
Mark 15:43
Joseph of Arimathaea, an honourable counsellor, which also WAITED FOR THE KINGDOM of God, came, and went in boldly unto Pilate, and craved the BODY OF JESUS.
Mathew 21:42-43
Jesus saith unto them, Did ye never read in the scriptures, The stone which the builders rejected, the same is become the head of the corner: this is the Lord's doing, and it is marvellous in our eyes?
Therefore say I unto you, The KINGDOM OF GOD SHALL BE TAKEN FROM YOU, and given to a nation bringing forth the fruits thereof.
Matthew 12:28
But if I cast out devils by the Spirit of God, then the kingdom of God IS COME UNTO YOU.
Matthew 19:24
And again I say unto you, It is easier for a camel to go through the eye of a needle, than for a rich man to ENTER INTO THE KINGDOM OF GOD.
Matthew 21:31
Whether of them twain did the will of his father? They say unto him, The first. Jesus saith unto them, Verily I say unto you, That the publicans and the harlots GO INTO THE KINGDOM of God BEFORE YOU.
JESUS IS ALWAYS THE DOOR, GATE, AND WAY TO THE KINGDOM OF GOD. HE IS ALWAYS CONNECTED AS THE ENTRANCE. GNOSTICS TAKE HIS GLORY AND LAVISH IT ON MAN, SAYING THE KINGDOM IS IN US ALL WE NEED TO DO IS BE AWARE OF IT. THE KINGDOM CAN BE IN US ONLY IF CHRIST HIMSELF BE IN US BY GRACE THROUGH FAITH.
-to him that worketh not