Martin Luther was a Catholic who left the Catholic Church — he added to and took away from the Bible — a grave sin then and a grave sin now, for he led many astray.
“he added to and took away from the Bible”
Which one, the one the Pope wrote?
Seriously, go back to Greek and Hebrew texts before Luther.
Nothing has changed.
He reluctantly left the Catholic Church. He didn't want to. He found where the Catholic Church strayed by Biblical testimony.