Perhaps their reply would be:
Only the Bible is true out of all religious books and only JWs use god’s name out of those 32K Christian Denominations.
Perhaps we can ask them: “Really, and this Almighty god of yours, who kills a man instantly for preventing the ark from tumbling down, didnt do anything when his Holy name was taken out of his Holy book and remains silent for 1875 years, until CT Russell came to restore it."
When 999 religions out of 1000 are false, why cant we scrutinise that one one "True" religion with the same criteria as you did for those false ones ?