The Light of the World is an allegorical painting by the English Pre-Raphaelite artist William Holman Hunt representing the figure of Jesus preparing to knock on an overgrown and long-unopened door, illustrating Revelation 3:20: "Behold, I stand at the door and knock; if any man hear My voice, and open the door, I will come in to him, and will sup with him, and he with Me". Wikipedia