Rublev’s Trinity is one of the most famous religious icons in the world, and it’s a deeply symbolic and theological work of art. Painted by Andrei Rublev, a 15th-century Russian monk and iconographer, it visually represents the Holy Trinity — not as an abstract doctrine, but as a deeply relational and spiritual mystery. The inspiration for the icon is the Old Testament story in Genesis 18, where three angelic visitors come to Abraham and Sarah, a scene often called “The Hospitality of Abraham.”  Yet Abraham and Sarah are notably absent from the scene. This shifts the focus from a narrative scene to a theological vision: not a story about the Trinity, but an icon of the Trinity.