A JESSE TREE is a symbolical genealogical Tree of Christ. It starts from Creation and Adam and Eve through Noah, Abraham, Isaac, Jacob, Joseph, Moses, Rahah, Ruth, David, Solomon... till JESUS, THE ROOT OF JESSE.
JESSE was the father of King David of Israel.
When we say JESUS IS THE ROOT OF JESSE it means HE IS THE ONE WHO CREATED JESSE.
At the same time The Jesse Tree shows us that JESUS IS A DESCENDANT OF JESSE too.
This means the TREE OF MANKIND WAS CORRUPT and had to be restarted.
JESUS IS THE NEW SPROUT, the new branch IN THIS TREE - HE MADE A NEW BEGINNING POSSIBLE FOR MEN WHO TURN TO HIM. They can belong to this new generation who loves God above all things and submits to His will, producing GOOD FRUIT.
That is why Jesus is called the Second Adam: he came to UNDO the first Adam's disobedience of God, by being obedient to death ( The Lamb of God, innocent and totally submissive )
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