Could you clarify the Catholic view of the literal body and blood of Jesus in the Eucharist? [John 6:53-58, John 6:40, John 6:54, John 6:63, John 2:19, John 4:15-16, Matthew 26:28, Mark 14:22-24, 1 Corinthians 11:23-25, Isaiah 30:20-21, John 11:11, John 4:32, John 3:4].