And what happens if they excommunicate you for believing in the Word of God?
The you follow the life of St. Athanasius of Alexandria during the Arian heresy. This type of persecution has happened before and may be happening now. Read more about Athanasius at http://www.catholic.org/saints/saint.php?saint_id=336
And are you using the term "Word of God" as a synonym for "The Bible" in your question?
“And what happens if they excommunicate you for believing in the Word of God?”
Nothing.
Schismatics and heretics have no authority to either modify church law, declare saints, ordain, nor bind and loose as in declaring one excommunicated.
Please do see http://novusordowatch.org/ for more on this.