The pictures of the Trinity below come from four different traditions. The first picture is entitled
The Adoration of the Trinity. It was painted by Albrecht Durer in 1511.
The second picture is The Trinity by El Greco. It is from 1577.
The third picture is a painting of Andrey Rublyov entitled Trinity. It was painted around 1411.
The fourth picture is Jacob de Wit's Holy Family and Trinity from 1726.