The concept of the duality of human nature, expressed through the role-playing of God and Satan, implies that within each person, two fundamentally different principles coexist simultaneously.

Duality of the Divine and the Demonic Within

The concept of the duality of human nature, expressed through the role-playing of God and Satan, implies that within each person, two fundamentally different principles coexist simultaneously. On one hand, there exists a higher, divine principle, reflected in the image of God, which embodies the ideals of light, order, and moral purity. This principle symbolizes the inner human, capable of finding joy in God's law, of creating, and of striving for the highest truth and love. On the other hand, there is a lower principle within the human, corresponding to the symbol of Satan or the Devil—a force that brings division, inner conflict, enslavement to passions, and a propensity for sinfulness.

Such a view of duality is illustrated as follows. In one of the sources it is stated:
"This duality is meant by the apostle in his Epistle to the Romans, indicating that we combine within ourselves the 'inner man', who 'finds delight in the law of God', and the captive of the 'law of sin which is in my members', and that 'the Spirit helps us in our weaknesses'; and Christ himself speaks of this duality in the words: 'the spirit is willing; but the flesh is weak'." (source: link txt)

This assertion emphasizes that a person simultaneously possesses both the capacity for an elevated, spiritual perception of the world and, on the contrary, the tendency towards weakness, downfall, and internal strife. In addition to this, another quote points out that it is precisely in the human heart, where "God and the devil fight," that the source of evil germinates, reflecting the personal struggle between good and evil:
"In the realm of human existence, the human heart is the source of evil, where God and the devil contend. Within this depth, the struggle between them takes place, and it is possible for good to drive out evil." (source: link txt)

Thus, the role-playing of God and Satan in a person's personality represents a constant internal confrontation, where the higher principle seeks unity with Divine truth while the lower multiplies internal disagreements, leading to a fragmentation of consciousness. This internal conflict reflects the fundamental dichotomy of human nature, determining the freedom of choice—where the decision to reject or accept one of these principles preordains the moral direction of a person's life. This concept demonstrates that the struggle between good and evil is not merely dependent on external circumstances but is deeply rooted in the very nature of the personality, making the final choice inevitable.