BrightEye
I came across this painting by Dosso Dossi, 'Madonna in Glory with Saints John the Baptist and John the Evangelist' (16th century). One of the saints is holding an open book, the other a shut book in one hand and a cup with a protruding snake in the other. Both look at the Virgin and Child floating on a cloud.
Could the cups with the serpent in the 7 of Cups have something to do with one or the other John?
Could the cups with the serpent in the 7 of Cups have something to do with one or the other John?