"Careful, JMT. It was Christianity that started the argument over what the definition of "is" is.
"This is my body, given for you..." (emphasis mine)
Shalom."
Yes, Christ was and "is" a very controversial figure and there is nothing new under the sun. Things are on course just as it is written they would be.
Of course, The Bible is G-d's inerrant witness to His Holy Word, Jesus. However, we are not inerrant interpreters of His witness.
IMHO: become a disciple of Jesus and the rest will work itself out.
Shalom.