How do we know that Christ is our sustenance?

Isaiah reminds us that God removes the basic necessities from the wicked as a sign of His judgment, yet for the righteous, Christ takes on the role of their sustenance. In John 6, Christ is referred to as the Bread of Life, emphasizing that He fulfills our spiritual hunger and thirst. He alone satisfies our needs because He bore our sins and judgment on the cross and is now the source of all that is good for believers. As believers, we find in Him all that we need—physically, spiritually, and emotionally, as Christ both protects and provides for us in every circumstance.