As far as anyone knows, out of all the Jesuses back then, only the name of one of the was so holy as to be abbreviated in sacred texts as
a nomen sacrum, or sacred name.
Can't think of another Jesus whose name was so Holy that it was abbreviated with a special abbreviation known as
a nomen sacrum, or sacred name.
Jesus is written as
a nomen sacrum, or holy name, in the middle of the fourth line and would look to you like IC with a line over the top of those two letters.