This image is influenced by paintings done on sarcophagi in Egypt; specifically the mysterious Egyptian Fayum portrait, Arsinoe tomb of Trajan (117-98 BCE). The artist added an apple to his illumination, as a nod to the Renaissance’s European influence and a reference to the Garden of Eden.
So is my darling among the maidens.
Like an apple tree among trees in the forest,
So is my beloved among the youths.
I delight to sit in his shade,
And his fruit is sweet to my mouth.
- Chapter 2:2-3