The Gospel of John has three (and the Beloved Disciple was a witness to Jesus public ministry) while the synoptics only have one. So I’ll go with the Gospel of John which means the public ministry was at least a little over two years.
And remember The Last Supper was a Passover meal!
Love the Beloved Disciple leaning against Jesus in both these paintings.
Not sure who painted this –

This is by 14th century painter Ugolino da Siena and is in the Metropolitan Museum of Art.

Leave a Reply