When given the opportunity to speak, Charles refused to enter a plea, claiming that no court had jurisdiction over a monarch. He believed that his own authority to rule had been due to the divine right of kings given to him by God, and by the traditions and laws of England when he was crowned and anointed, and that the power wielded by those trying him was simply that of force of arms. Charles insisted that the trial was illegal, explaining, "No learned lawyer will affirm that an impeachment can lie against the King ... one of their maxims is, that the King can do no wrong." Charles asked "I would know by what power I am called hither. I would know by what authority, I mean lawful Charles I opening speech at his trial</ref> Charles maintained that the House of Commons on its own could not try anybody, and so he refused to plead. The court challenged the doctrine of sovereign immunity and proposed that "the King of England was not a person, but an office whose every occupant was entrusted with a limited power to govern 'by and according to the laws of the land and not otherwise'."