It was blasphemy for Jesus to call himself the "Son of God".
It was Paul who started Christianity as we know it today based upon the claim that Jesus was the "Son of God". What is curious is that this is the same Roman whose mission was to destroy the Jewish faith. What better tool could there be than to create a Jewish "Messiah" and start a competing religion that blamed the Jews for the death of the Messiah.
The Romans crucified Jesus. Christianity is the ultimate completion of the Jewish faith. All the early Christians were almost entirely of the Jewish faith. Jesus said, "Before Abraham was,"I am." He was calling himself God. It is not blasphemy for God to call himself God. And only God himself has the right to judge who is or isn't His begotten Son.
He didn't say 'I am', he said 'I Have'.
No Jesus didn't. He said, "I am."
John 8:58 ►
New International Version (©1984)
"I tell you the truth," Jesus answered, "before Abraham was born, I am!"
New Living Translation (©2007)
Jesus answered, "I tell you the truth, before Abraham was even born, I Am!"
English Standard Version (©2001)
Jesus said to them, “Truly, truly, I say to you, before Abraham was, I am.”
New American Standard Bible (©1995)
Jesus said to them, "Truly, truly, I say to you, before Abraham was born, I am."
Holman Christian Standard Bible (©2009)
Jesus said to them, "I assure you: Before Abraham was, I am."
International Standard Version (©2012)
Jesus told them, "Truly, I tell all of you emphatically, before there was an Abraham, I AM!"
King James Bible (Cambridge Ed.)
Jesus said unto them, Verily, verily, I say unto you, Before Abraham was, I am.
Aramaic Bible in Plain English (©2010)
Yeshua said to them: “Timeless truth I speak to you: Before Abraham would exist, I AM THE LIVING GOD.”
GOD'S WORD® Translation (©1995)
Jesus told them, "I can guarantee this truth: Before Abraham was ever born, I am."
King James 2000 Bible (©2003)
Jesus said unto them, Verily, verily, I say unto you, Before Abraham was, I am.
American King James Version
Jesus said to them, Truly, truly, I say to you, Before Abraham was, I am.
American Standard Version
Jesus said unto them, Verily, verily, I say unto you, Before Abraham was born, I am.
Douay-Rheims Bible
Jesus said to them: Amen, amen I say to you, before Abraham was made, I am.
Darby Bible Translation
Jesus said to them, Verily, verily, I say unto you, Before Abraham was, I am.
English Revised Version
Jesus said unto them, Verily, verily, I say unto you, Before Abraham was, I am.
Webster's Bible Translation
Jesus said to them, Verily, verily, I say to you, Before Abraham was, I am.
Weymouth New Testament
"In most solemn truth," answered Jesus, "I tell you that before Abraham came into existence, I am."
World English Bible
Jesus said to them, "Most certainly, I tell you, before Abraham came into existence, I AM."
Young's Literal Translation
Jesus said to them, 'Verily, verily, I say to you, Before Abraham's coming -- I am;'