Use digital art techniques to create a scene inspired by Exodus 9:8. Within the scene, imagine the Biblical figures of Moses and Aaron, with Moses holding handfuls of furnace ashes. He should be in the act of sprinkling these ashes toward the sky, with Pharaoh witnessing this powerful act. The background should suggest an ancient Egyptian environment, imbued with the subtle glow of a furnace, along with the textures of the surrounding desert landscape.