How do we know that Jesus is the true bread from heaven?

In John 6:51, Jesus declares, 'I am the living bread which came down from heaven.' This statement indicates that, unlike the manna that sustained the Israelites temporarily, Jesus provides a means to eternal life. As He explains, those who partake of Him spiritually are guaranteed everlasting sustenance and life. The Jewish audience struggled with this concept, as seen in their skepticism and confusion. However, Jesus emphasizes faith in Him is necessary for salvation, demonstrating the importance of believing in Him as the fulfillment of God's promise of life.