St. Andrew Rublev:   St. Andrew’s icon of the Holy Trinity is one of the most well know icons in the world.  Showing the Three Persons of the Trinity as identical individuals hosted by Abraham and Sarah.  Just as the Trinity is portrayed the ‘same’ we as Christians should strive for sameness with our Brother and Sisters united in the Love of Christ and spreading that Love to the world.

http://oca.org/saints/lives/2015/07/04/101893-venerable-andrew-rublev-the-iconographer

http://upload.wikimedia.org/wikipedia/commons/0/0b/Angelsatmamre-trinity-rublev-1410.jpg