Numbers - Chapter 11
We now move on to the story of the wilderness wanderings. And this begins with the people complaining. Even when they are eating the bread (manna) provided for them, the people are complaining.
"We have lost our appetites; we never see anything but this manna!"
And John chapter 6 shows us that the manna represents Jesus - and also that the grumbling continued when he came in person:
"So they asked him, “What sign then will you give that we may see it and believe you? What will you do? Our ancestors ate the manna in the wilderness; as it is written: ‘He gave them bread from heaven to eat.’ Jesus said to them, “Very truly I tell you, it is not Moses who has given you the bread from heaven, but it is my Father who gives you the true bread from heaven. For the bread of God is the bread that comes down from heaven and gives life to the world.” “Sir,” they said, “always give us this bread.” Then Jesus declared, “I am the bread of life. Whoever comes to me will never go hungry, and whoever believes in me will never be thirsty."
"The Jews there began to grumble about him because he said, “I am the bread that came down from heaven.”"