John 6:33

For the bread of God is that which cometh down out of heaven and giveth life unto the world.

Unto the world ... Not for Israel alone was the true bread, but for all the world. The true bread was far greater than the manna in these particulars: (1) it gives and sustains spiritual life, a far greater thing than merely sustaining physical life; (2) it is for all the world, not merely for Israel alone; (3) it creates spiritual life leading to eternal life, which no manna could have done.