From Happiness and the Art of Being by Michael James:
The spirit ‘I am’ is not only the truth or reality of all things, the source from which they all originate, and the life or consciousness that animates every sentient being, but is also the only way by which we can return to our original source, which we call by various names such as ‘God’ or the ‘Father’. Except by turning our attention within towards the spirit, the consciousness that we each experience as ‘I am’, there is no way by which we return to and become one with our source. Therefore true salvation can only be attained not merely through the person who was Jesus Christ, but through the spirit which is Jesus Christ – the eternal spirit ‘I am’ that exists within each one of us.
Not only did Christ affirm his oneness with God, his Father, he also wanted us to become one with him. Before his arrest and crucifixion, Christ prayed for us, ‘Holy Father, […] that they may be one, as we [are]. […] that they all may be one; as thou, Father, [art] in me, and I in thee, that they also may be one in us […] that they may be one, even as we are one: I in them, and thou in me, that they may be made perfect in one’ (John 17.11 & 21- 23). That is, the aim of Christ was that we should cease to mistake ourself to be an individual separate from God and should know ourself to be the one indivisible spirit, the pure fundamental consciousness ‘I am’, which is the reality of God. Thus oneness or non-duality is the central aim of the spiritual teachings of Jesus Christ.