The triptych called Merode altarpiece shows showing of Gabriel to Mary. This art piece is full of details that serve the purpose of symbolizing different meanings.
Some of the symbols are:
white lilies in the vase symbolize Mary's purity
the vessel on the wall, above Mary, is the symbol of her sinless state
the white towel is another symbol of her purity
walled garden (closed garden) on the left, in which patrons are stated, is the typical Medieval and Renaissance symbol of Mary's virginity
tiny naked child above Gabriel, coming from the light to Mary, is the symbol of body and soul of Jesus Christ
the cross baby caries is a symbol of forthcoming sacrifice
extinguished candle metaphor the sudden entrance of the Holy Ghost
mouse traps that are around Joseph, on the right side of the altarpiece, represent the statement of St Augustine that the cross of the Lord was the devil's mousetrap
