Orbs are a symbol of the world, and Christ is often shown holding one as a symbol of his being King and ruler of the entire world.
“Salvator Mundi” (Savior of the World) is a popular depiction of Christ that shows him raising his right hand in blessing and holding an orb symbolizing the world in his left hand. Many artists have painted or sculpted the “Salvator Mundi” in this way.
