Selection from New Jerusalem Heavenly Doctrine ~ Emanuel SwedenborgEveryone has an internal man and an external man; the internal is what is called the spiritual man, and the external is what is called the natural man, and each is to be regenerated, that the man may be regenerated. With the man who is not regenerated, the external or natural man rules, and the internal serves; but with the man who is regenerated, the internal or spiritual man rules, and the external serves. Whence it is manifest that the order of life is inverted with man from his birth, namely, that serves which ought to rule, and that rules which ought to serve. In order that man may be saved, this order must be inverted; and this inversion can by no means exist, but by regeneration from the Lord.
What it is for the internal man to rule and the external to serve, and vice versa, may be illustrated by this: If a man places all his good in pleasure, in gain, and in pride, and has delight in hatred and revenge, and inwardly in himself seeks for reasons which confirm them, then the external man rules and the internal serves. But when a man perceives good and delight in thinking and willing well, sincerely, and justly, and in outwardly speaking and doing in like manner, then the internal man rules and the external serves.
(NJHD 179 -180)