This section establishes a committee of 25 barons who could at any time meet and overrule the will of the King if he defied the provisions of the Charter, seizing his castles and possessions if it was considered necessary.
This is based on a medieval legal practice know as distraint, but this was the first time that it was applied to a monarch .
Clause 9, the “ancient liberties” of the city London. (London shall have all the Old Liberties and Customs which it hath been used to have.)
Clause 29, a right to due process. (NO freeman shall be taken or imprisoned, or be disseised of his Freehold, or Liberties, or free Customs, or be outlawed. Or exiled, or any other wise destroyed; nor will We not pass upon him, nor condemn him, but by lawful judgment of his Peers, or by the law of the land.)
The clauses 12 and 14 of the 1215 charter state that the king must accept the “common counsel of out realm” when levying and assessing an aid or a scutage.
The clause that goes into great detail about how exactly the archbishops, bishops, abbots, earls and greater barons should be consulted is clause 14.
These clauses meant that the monarch had to ask before he raised the taxes.
The later charters merely said that “Scutage furthermore is to be taken as it used to be”, although in practice the convention arose after Magna Carta that Parliament would be consulted by the monarch before raising taxes.
In 1205 King John argued with the Pope Innocent III over who should become the archbishop of Canterbury. The Pope wanted Stephan Langton to be the archbishops, but King John promised he should never come to England.
The Pope retaliated in 1209 and excommunicated King John and banned all church services in parish churches.
The King gave in shortly, and the Pope made him and the people pay him money whenever he demanded it.
In 1212 the King imposed taxes to the Barons to make up for the lost lands of Aquitaine, Poitou and Anjou.
King John argued with the Barons over how he should rule England.
The Barons and Stephan Langton decided to make the King govern by the old English laws that had come before the Normans.