Through metaphor, Jesus compares himself with bread. Just as bread is necessary for our physical life, Jesus is necessary for our spiritual life. AT: "Just as food keeps you alive physically, I can give you spiritual life" (See: [[rc://en/ta/man/translate/figs-metaphor]])
This sentence states the opposite of what it means for emphasis. AT: "I will keep everyone who comes to me" (See: [[rc://en/ta/man/translate/figs-litotes]])