The Holy Trinity, one of the most famous icons painted by Andrei Rublev (1360–1430), depicts a scene from the Old Testament: God reveals himself to Saint Abraham in the shape of three angels visiting him. Andrei Rublev (1360–1430), a famous painter of icons and murals, became a monk at the Saviour-St Andronik’s Monastery in Moscow in the last years of his life. After his death, he was canonised by the Russian Orthodox Church.
Andrei Rublev (1360–1430), Holy Trinity (Troitsa), tempera on wood, 141.5 cm x 114 cm, 1425–1427; source: https://www.tretyakovgallerymagazine.com/articles/3-2005-08/andrei-rublev-image-holy-trinity, © Tretyakov Gallery.