By Leonardo da Vinci - Getty Images, Public Domain
The salvator mundi is a pictorial representation of what it takes for a person to be a healer. There are therapists and physicians abound and healing requires a sophisticated set of skills, including but not limited to a clear conscience as represented by the clear crystal orb, an ability to discern right from wrong without being partial to either or being partial to light versus dark and an ability to discern which is which with a kindness in constitution and outlook at life as represented by the quality of the eyes in the image. The hand is much the position for an oath at peace where peace is a mindful prudence between opposites and the fingers that of a teacher discerning, distinguishing which is which, being impartial, for that alone heals in words that are based on silent conscientious presence with the fingers positioned for a tuppence-worth of love/light that is all that is required in a moment to come out of ignorant dark. The person depicted in the image would probably qualify the Physician's Oath and may be a pictorial representation of what the person following the oath would look like.