What does John 6:40 mean?
Ancient writing styles used repetition to emphasize the truth of a statement. Jesus' comments in this verse are extremely similar to those just made (John 6:39). Jesus has made it clear that eternal life is given to those who believe in the One sent by God (John 6:29). This is the "true bread from heaven" (John 6:32). It is also the real point behind miracles such as manna in the Old Testament (Exodus 16) and Jesus' own feeding of thousands from the previous day (John 6:9–14). Jesus has explicitly stated that eternal life is not the result of a "work," meaning some ritual or action, but only the result of belief in Him. According to Jesus, He is the One sent by God, who will infallibly accept all whom God the Father gives Him (John 6:37), and who will infallibly keep them to see eternal life (John 6:39).Here, Jesus specifies the necessity of belief for those who seek eternal life. In addition, Christ makes another clear statement on the doctrine of eternal security. Those given to Jesus by God, He absolutely will save. Those He saves absolutely will remain saved, to be "[raised] up on the last day." Once a person is truly saved by Christ, their salvation can never be lost.