Christ Ahnsahnghong Preached The Cure For Death

One of my coworkers asked me why I preach and tell people about God. There are actually many good reasons to do so, but I'm now gonna mention one: as a cure for death.



It's like people have it engraved in their minds that "eternal life is impossible to have. It is something you get when you go to heaven..." Yet we all thought that we have to die to go to heaven. How can we die to have eternal life? What about what Almighty God said?



John 6:53 "Jesus said to them, "I tell you the truth, unless you eat the flesh of the Son of Man and drink his blood, you have no life in you. 54 Whoever eats my flesh and drinks my blood has eternal life, and I will raise him up at the last day. 55 For my flesh is real food and my blood is real drink. 56 Whoever eats my flesh and drinks my blood remains in me, and I in him."



My friend told me that she does this when she takes communion. But communion was created in AD 325. So how can this verse be referring to communion if communion didn't exist yet?