Hard Passages - Part 15

Do the elements of communion actually become the flesh and blood of Christ? Is that what John 6:53 is saying? Certainly the Catholic religion believes it to be true. This verse is a metaphor of what a life of faith is all about. Romans 6:20-23 is an often puzzling passage. Does this passage indicate that we can lose our salvation? Or is this passage a wonderful message of eternal security?Romans 7:1-3 is most often used in the context of divorce and remarriage. Is remarriage a sin? What was Paul trying to communicate in this passage? Is it really an indictment against remarriage or is it a wonderful illustration of dying to the law to live in grace? This is by no means a legalistic passage although it is often interpreted that way.