Focus on this artwork and explain the abstract.
Saint Floriano is a tempera and gold panel painting (79 × 55 cm) by Francesco del Cossa, created circa1472 and on display at  the National Gallery of Art in Washington. The work was the upper left panel of the Griffoni Polyptych.
National Gallery of Art tempera Francesco del Cossa Griffoni Polyptych Polyptych Saint Florian