Jesus provides life, not a mere existence.
I am the living bread that came down out of heaven; if anyone eats of this bread, he will live forever; and the bread also which I will give for the life of the world is My flesh. (John 6:51)
Manna sustained the Jews in the wilderness, but Jesus came to bring more than mere survival. Existing is quantitative, measured in time, but living is qualitative, stretching through eternity, and encompassing time. Yet the manna foreshadowed Jesus in a sense. The word means, “What is it?” Jesus was a mystery to those who saw Him. The manna fell at night, so Jesus came into the world’s darkness. Manna was God’s gift to the people; all they had to do was receive it. So with Jesus. He is God’s gift, and even better than manna, providing life, not measly existence.