the part about them eating the child isn't metaphorical, it IS literal, but GOD did not say "you should do this too" it was an example of the desperation the people felt when they went against him, and their moral downfall...never once did GOD say "you should kill your children and eat them when you're hungry, it's okay..I'll forgive you cuz you were really hungry"...

the rest of it IS symbolic, because during communion they say both verses, where Jesus says specifically that the bread symboliZes his body and the wine symboliZes his blood...

the BIBLE doesn't condone or glorify cannibalism

P.S. NOS, there are specific religions that only believe certain testaments of the BIBLE, one being Jews who (I think) believe only in the Old Testament...each testament is based on 1 of GOD's 2 commandments (yes I know there are 10, but they're broken down to 2 categories)...personally, I believe we should follow both testaments, the New Testament is just dealing with more real life situations in parables that we better understand, and shows that the prophecies of the Old Testament, have come true