Who alone can bring true joy to Israel according to the sign at Cana?

Jesus of Nazareth, the Messiah, is the only One who can bring true joy to the nation of Israel. The sign at Cana showed Israel had no hope and had lost national joy, and He alone can fill their pots with joy, not half-heartedly but brimful.

Les explains that the wedding feast running out of joy depicts Israel's condition: their religion had bogged them down and left them destitute of joy. Jesus' miraculous sign at Cana was given to the nation, showing that He as their Messiah is the only One who can bring true joy. When He brings joy, it is not half-hearted or 75 percent, but brimful. Les notes this was still in Israel's future, and they kept rejecting it, but the sign testified that Jesus of Nazareth alone could fill their pots with joy.

John 2:7

Jesus saith unto them, Fill the waterpots with water. And they filled them up to the brim.

How complete is the joy that Jesus gives to Israel?

The joy Jesus gives to Israel is brimful and complete, not half-hearted or seventy-five percent. As their Messiah, He alone can bring true joy to the nation, filling its empty pots to the brim. This was pictured in the sign at Cana, though Israel's national fullness remains future.