Many Eastern and modern spiritual traditions claim that oneness is the pinnacle of spiritual achievement. In this sense, oneness means to connect to — and ultimately become absorbed into — a great numinous matrix. This can be likened to a drop of water returning to the ocean, as Zen traditions claim.
However, oneness can also be realized as the loss of individuality when memories and experiences become information within the Akashic records. In all of these cases, the individual that once was a human being no longer exists upon the death of the body. The essence of one’s experience and being is simply absorbed into the fold of a higher level of reality, or into a greater whole.
In the classical sense of oneness, each individual is advised to reject or remove the ego. This enables an easier assimilation into the great numinous state of oneness. This results in the loss of who you are, and all that you have gained, as an individual. However, this is not the only option open to us. We can retain our individuality and still become part of a greater whole.