“This doctrine of the possibility of losing one’s soul and, hence, individuality, militates with the ideal theories and progressive ideas of some spiritualists, though Swedenborg fully adopts it.
They will never accept the kabalistic doctrine which teaches that it is only through observing the law of harmony that individual life hereafter can be obtained; and that the farther the inner and outer man deviate from this fount of harmony, whose source lies in our divine spirit, the more difficult it is to regain the ground.
But while the spiritualists and other adherents of Christianity have little if any perception of this fact of the possible death and obliteration of the human personality by the separation of the immortal part from the perishable, the Swedenborgians fully comprehend it.”
H. P. Blavatsky
The Mark Of God: Understanding Your "I AM Presence" 