What does John 6:32 mean?
As Jesus attempts to explain the real message behind His miracles, the people are still hung up on materialism. They are seeking free food (John 6:26) and spectacular events rather than spiritual truth. When Jesus clarifies that salvation is based on belief, not on good works or rituals (John 6:29), the people immediately demand another miracle! Further, they invoke the provision of manna when Israel was in the wilderness under Moses (John 6:30–31). Their challenge is that if Jesus is to claim to have more authority than Moses, Jesus ought to do something more spectacular than Moses did.In response, Jesus continues to draw a distinction between material bread and spiritual bread (Isaiah 55:2; Matthew 4:4). The first correction He makes is that God was the one who provided the manna. So, these people need to focus on God and His requirement of faithful belief rather than ritual obedience to the laws of Moses (Romans 10:1–4). Jesus has pointed out that material food is temporary, but spiritual food is eternal (John 6:27; Matthew 6:19–20). Likewise, He suggests that the manna was merely a physical item; "the true bread from heaven" is something else.
In the following verse, Jesus will explicitly state that He is this "bread of God" which gives eternal life to the world. Even so, the people's fixation on material things will cause them to misunderstand. They will once again ask for something physical, rather than spiritual.