For this reason the Jews tried all the harder to kill him; not only was he breaking the Sabbath, but he was even calling God his own Father, making himself equal with God. (John 5:18)
Jesus seems to have been first to utter it, though it’s an Hebraic formulary nonetheless.
It’s also important to remember that Jesus himself was a Pharisee as attested to by their being the only ones to ordain rabbis through “simicha”, or the laying on of hands. And that he was referred to as rabbi throughout his career would otherwise seem a stolen title.
Though I believe he was “mashiach” in the Jewish sense in that America could not have been founded without his influence. And that’s no small thing.