Knowledge of God and knowledge of Jesus Christ. Even though knowledge of God thru Christ makes sense if you are talking about the purely spiritual Christ that has existed since the beginning, or that knowing Jesus the man means you automatically know God.
I agree that the short term goal of an individual should be making ourselves like Christ, but in both ways, of simple imitation of behavior, from the human man, and intellectual alignment to his way of thinking(Christ).
Where I disagree, is with thinking that imitation is the end goal, and not recognizing what Jesus was trying to accomplish with his example and sacrifice… not recognizing the reason around claiming he was the Messiah.
You have to put yourself in Jesus’ shoes and recognize the situation he was in order to see what he was attempting to do. What is the ideal thing to do when you have been identified as the Messiah? His answer is to turn the paradigm of authority upside down and serve and die for the people, instead of what was previously the standard.
Jesus washing the disciples' feet is about establishing an example of how leadership should behave. All of this is missed if you fail to see him as the messiah because you think his issue was just ethical behavior (legalism) or belief in a particular metaphysical outlook (Gnosticism).
But that is a matter of belief. If I say that Jesus never existed, or insisted that He did, in either case I would be bearing false witness. I was not there.
The scriptures in the bible are a catholic interpretation of events, in that the selection supports a catholic position, were selected by catholics, to promote catholicism, which sought to integrate as many different schools into one as possible.
The catholic position, is that Jesus supreme sacrifice was made on the cross. The Gnostic position, is that Jesus supreme sacrifice was to leave the heavens and enter the world of death.
The catholic position is that Jesus died to pay for our sins in a vicarious atonement. The Gnostic position is that Jesus did not stay dead, so there was no payment. Never the less, we accept His blood as the symbol of what all mankind is expected to do---no one gets in to see the King without it.
The catholic position is that God demanded the sacrifice of His own Son. The Gnostic position is that the powers of evil conspired to bring about His untimely demise, not knowing that He would be able to defeat death.
The Gnostic position is that Jesus wasn't going to skip dying, because everything that lives here dies. The nails are driven into our wrist as soon as we crack our mother's womb. Jesus was both man enough and God enough to face it. His body, or " the slave" died, but He did not. He defeated death, showing that it can be defeated.
We look to the knowledge that He brought about God, as our healing salve. We don't have to fear our Father, because our Father loves us; we take care not to pollute that inheritance.
Imitation is the sincerest form of worship. Look no further than your teen children for verification.
There is no legalism; that's of the demiurge. We do what we do out of Love, not law.