To be fair, the Christian Bible and Catholic Bible are not that different. The verse mentioned above appears in all versions of the Bible. Here is another verse that appears in all versions of the Bible:
there is absolutely no difference in the catholic bible to any other bible... they all use the "christian bible".
The difference is the interpretation.
Leviticus 26:29
'Further, you will eat the flesh of your sons and the flesh of your daughters you will eat.
You’re not a real Christian if you don’t believe what’s in the Bible. Looks like it’s hard to shake the cannibal label. That is the reason Christians were persecuted by Nero. That’s the reason why they’re being persecuted now. They practice cannibalism. You cannot be a Christian without being a cannibal. It’s not a metaphor. Jesus told his apostles to consume his flesh and drink his blood. Whether it was a metaphor or not, it’s still cannibalism.
Yes you can be a Christianwithout following "the rules"... you are a christian if you believe in God and Jesus as his son. That's what makes you a Christian. Nothing more, nothing less.
Jesus talked about the faith, not the rules. He worked on sabbath and talked to people he "wasn't allowed" to. He broke rules on purpose, to make clear that not the rules count, but your faith only.
So, no matter what rule you break, as long as you believe, you will come to paradise.
Now about cannibalism.
You should read the whole text, not just a fraction of it.
At first you are talking about Jesus. If you read the whole part, you will notice that he refers to the bread as his body and the wine as his blood. He makes clear that he is talking about a metaphor.
What he describes is that they will meet again and celebrate his message. While they do so they will eat and drink... while talking, eating and drinking they will understand his message more and more. They ABSORBE his message, just like your body absorbs bread and wine.
It has nothing to do with cannibalism.
Later you are talking about God talking to the Jews.
Again it would help to read the whole text. At first God tells them what he will do for the Jews if they worship him and follow his rules. He will give them land, peace, wealth and make them strong to stand against every enemy.
If they don't worship him, he will take away everything from them. Enemies will attack them, they will lose their wealth and land. They will starve so much that they will feel forced to eat their own children.
So, this cannibalism isn't something they should do, but something they will do because god punishes them so much...
By the way. This God is the same God Jews, Christians and Muslims worship.
If you think one group should do cannibalism, you also argue every group should do it.