How do we know Jesus' claim to be the Bread of Life is true?

The truth of Jesus' claim as the Bread of Life is substantiated by His works and His identity as the Son of God. He performed miraculous signs, such as feeding thousands with a small amount of food, which serve as a testament to His power and divine authority. Moreover, His resurrection from the dead stands as a powerful validation of His lordship. When He speaks of being the bread that came down from heaven, He is inviting us to trust in Him for spiritual sustenance, just as the Israelites depended on daily manna for their physical needs.