In this image, the soul of a believer saved from damnation is guided by Saint Michael toward Paradise.
The soul is depicted as a child, symbolizing their rebirth in the Heavenly Kingdom, but also referencing the Gospel of Saint Luke where Christ says: "But Jesus called them to Him and said, “Let the little children come to Me, and do not forbid them; for of such is the kingdom of God. Assuredly, I say to you, whoever does not receive the kingdom of God as a little child will by no means enter it." (Luke, 18:16-17)
Total nudity is rare in human representation during the Middle Ages. It is generally limited to the iconography of Genesis, with the figures of Adam and Eve, and to depictions related to the Judgment, where the human souls of the elect and the damned are shown naked.
The souls undergoing judgment must be humble: they will regain the dignity afforded by clothing only when they reach Paradise.
The damned, on the other hand, will remain in their nakedness.