The icon on display depicts three travelers in the form of angels. The travelers have staffs in their hands, they are sitting at the table, with the forefather Abraham kneeling in front of them, with gifts in his hands. Behind the backs of the angels is a green-crowned oak tree, near which Abraham’s wife Sarah is standing. The angels have rounded faces and golden halos.

The iconography is based on the biblical story of how God appeared to Abraham in the form of three travelers under the shade of the Oak of Mamre,

Then Abraham realized that God had visited him in the guise of the three travelers. Soon Sarah conceived and bore a son. Abraham named his son Isaac and circumcised him on the eighth day of his birth. On the day Isaac was weaned from his mother’s breast, his father gave a great feast.

In iconography, the three angels are depicted as male figures, each with a different role: the Holy Spirit, God the Father, and the Son of God. Therefore, the image of the Trinity becomes a symbol of the three divine persons that make up the one Godhead. The faithful turn to the icon with prayers for help in good deeds and ask for the granting of generosity and mercy.

The Day of the Holy Trinity (Pentecost) is one of the principal Orthodox holidays. In the Orthodox tradition, it is celebrated on the fiftieth day after Easter. On Pentecost it is customary to decorate churches and houses with green birch branches, to sprinkle grass and flowers on the floor. Priests serve in green vestments: it is believed that from the Holy Spirit, everything blossoms and comes to life — flowers, trees, and human souls.