2John 1:9: Anyone who goes too far and does not abide in the teaching of Christ, does not have God; the one who abides in the teaching, he has both the Father and the Son. (NASB)
The knowledge of Christ does not include all the knowledge possible in the world. If it does not start and end with Christ as taught by the apostles then it is not acceptable. We should not even entertain those who hold errant doctrines (2John 1:10).
The focus verse talks about going too far, and Jesus talks about the straight and narrow path which leads to life and the broad way which leads to destruction (Matthew 7:13-14).
Both are ways leading somewhere, you can advance in the two directions, you can make progress. On both roads there is the sense of movement, progress even, with not much difference expect the breadth of the road. But at the end the difference becomes clear.
The one moving on the narrow path ends up in life, while the person who moving in the broad road ends up in destruction.
Where you end up is a function of where you coming from, the road you take. When it comes to knowledge there is a narrow one, a specific one that leads to life. Not all knowledge leads to God, not all roads leads to God.
Jesus is the way and the truth that leads to life, and he is that life (John 14:6). God has chosen to give life to humanity and that life is embedded in his son Jesus (1John 5:11).
All power in heaven and on earth has been given to him, but that does not mean that some others will not claim they have power and seek to have others bow before them, and serve them.
Just as there is a broad road of the truth, which is what different people chose to believe as being the truth, there is also a broad road of power, which are the different sources of power that people chose to recognise as true.
In the land of Samaria before Philip when there with the truth of Jesus and the demonstration of the power of God for the miraculous, there was one Simon who was a sorcerer, who did amazing things also with some kind of powers (Act 8).
In the land of Ephesus where Paul preached there was a woman who was possessed with a spirit of divination, the power to supernaturally know things. So we have pockets of expression of power, that people allow themselves to be subjected to, but they are false powers, they are the power of darkness that fades away in the presence of the light of Jesus.
There was a display of some power in the land of Egypt by Pharaoh’s sorcerers, when God was set to free the children of Israel. The sorcerers of Pharaoh were able to make some effort in the supernatural, but the power of God so overwhelmed the land that the sorcerers were, after some time, unable to replicate the power demonstrated by Moses in the land.
Paul wrote that we wrestle not against flesh and blood but against principalities and power, and the rulers of the darkness of this age (Ephesians 6:10-14).
But Jesus had defeated them on the cross, so why do we have to fight them (Colossians 2:13-15)?
Their legal total rule have “expired” on the earth but as long as some people still do not give their lives to Jesus, they maintain some measure of control over their lives. But there’s is a waning power (though sometimes it does not seem like that), and there is a limit to their operation.
There are three ways in which we can go too far: in what we believe about God the father, God the son and God the Holy Spirit.
God the Father
People say that God does not have a son, and they are wrong. They say that God is so loving he will not throw people into hell, they are wrong. The bible says that God does not want any to perish but that all should come into repentance, and he offered his son to die for us (2Peter 3:9). But if they do not repent they will perish. Others say that God is barbaric to require blood. They are thinking carnally, with no consideration for the holiness of God and how sin is anathema to it.
God the Son
Jesus is really misunderstood. But his personality as carefully constructed by the writers of the scriptures does not lend itself to confusion for those who believe.
The challenge is in the many contradictory titles of Jesus: lion and lamb; the one who is creator who was killed; God and man.
We are not supposed to pick one of the two dimensions of Jesus and reject the other. There was a creature in the bible with four kinds of faces, depending on what side you looking at it (Ezekiel 1:10). The wisdom of God which Jesus is referred to as being manifolds (Ephesians 3:10). God will not be boxed.
Jesus is the one who was born and at the same time is the source of all life. Some, confronted by the dilemma, wants to reduce his divinity calling him an angel, calling him created and by so doing they miss the way of life and lead away from it.
This is another tricky one. It seems convenience for some to refer to the Holy Spirit as merely a force, but he is a person.
We see the Holy Spirit speaking in the bible, as a person, but sometimes he is presented as a force used but the Father and the Son.
He called the Spirit of the Lord, there are seven spirits mentioned to be upon Jesus. He is also the Spirit of Christ.
But when Jesus was introducing him to us, it was not as a force, but he can manifested as such.
Look at the ways he was described in the bible:
As a dove coming upon Jesus (Luke 3:22).
As divine fire coming upon the disciples in the upper room (Acts 2:1-4).
When describing the one born of the spirit, Jesus said that the way we see the wind blowing, we do not know where he comes from and where it goes; so is the one born of the Spirit.
Paul said that we would be filled with the Holy Spirit as a spiritual wine (Ephesians 5:17-19).
We see the Holy Spirit as dove, fire, wind, wine, and you can beginning to think of him as merely a force, and if just that it does not make a sense that Jesus will say he will guide us into all truth. He will convict the world of sin, judgment and righteousness. He will take of what is his and show it to us. He calls him another comforter like him, not less than Jesus in anything, a full presentative of Jesus as the father was the full representative of the father (Hebrews 1, John 16).