The structure "It is~that~"

Tiberius let the Senate know that he was he who ruled, but he left the Senate with some duties, saving himself from being overburdned with work. He told the Senate to stop bothering him about every question that came up and to take initiative. But, to his disgust, Senators cringed before him.

I think "he" should be "it" and I'd like to know if my thought is right.
Thank you in advance for your help.