The present text is an attempt to understand and to come closer to that which has been passed down through the centuries as the perception of God as the Holy Trinity, which has found its visual expression in art that in the Orthodox tradition has been transformed into an indivisible part of theology. To this end, one of the variants for the visualization of the idea of the Holy Trinity is chosen that exists both in Eastern Orthodox and Western art with close formal characteristics, but in different contexts: the image of the Trinity of the Synthronoi type.What are the origins of this image, what is its meaning, what were the mechanisms for its spread and what are its basic models - these are the questions that the present text raises, without pretending to be able to answer them definitively.