Being one third of the holy trinity, he was his own father... how could he possibly disobey himself?
It's just another plot hole in the Great Omniscient Book.
Jesus also says that he's not here to change any of the old laws, that all the old laws still apply.
They just don't apply to him because he's the son of god. Or something.
It's a bit like star football players, they basically get a free pass on obeying the school rules.