Yes, concealed. Yes, hidden! Would you rather the bloody flesh of Jesus be visible in the Eucharist? It HAS been through various Eucharistic Miracles, of course, but otherwise, no. And the flesh turned out to be the flesh of a heart (at the miracle of Lanciano). And regarding your Bible chapters, have you ever been to a Catholic Mass? We hear/read Scripture every day!
And regarding your Bible chapters, have you ever been to a MORMON service? They hear/read Scripture every Sunday!
So do Jehovahan Witnesses!
And probably them Satanists, as well!