In compurgation, the one complaining, called the "plaintiff", and the one defending, called the "defendant", each told their story and put his hand on the Bible and swore "By God this oath is clean and true". A slip or a stammer would mean he lost the case. Otherwise, community members would stand up to swear on behalf of the plaintiff or the defendant as to their reputation for veracity. The value of a man's oath was commensurate with his value or wergeld. A man's brothers were usually his compurgators. The number of compurgators varied according to the nature of the case and the rank of the persons concerned. If there were too few "compurgators", usually twelve in number, or recited poorly, their party lost. If this process was inconclusive, the parties could bring witnesses to declare such knowledge as they had as neighbors. These witnesses, male and female, swore to particular points determined by the court.
If compurgation failed, the defendant was told to go to church and to take the sacrament only if he was innocent. If he took the sacrament, he was tried by the process of "ordeal", which was administered by the church. In the ordeal by cold water, he was given a drink of holy water and then bound hand and foot and thrown into water. If he floated, he was guilty beccause the holy water had rejected him. If he sank, he was innocent. It was not necessary to drown to be deemed innocent. In the ordeal by hot water, he had to pick up a stone from inside a boiling cauldron. If his hand was healing in three days, he was innocent. If it was festering, he was guilty. A similar ordeal was that of hot iron, in which one had to carry in his hands a hot iron for a certain distance. In the ordeal of the consecrated morsel, one would swallow a morsel; if he choked on it, he was guilty. The results of the ordeal were taken to indicate the will of God.
An archbishop's or bishop's oath was incontrovertible. If they were accused, they could clear themselves with an oath that they were guiltless. Lesser ranks could clear themselves with the oaths of at least three compurgators of their rank or, for more serious offenses, undergo the ordeal.
The shire and hundred courts were held for free tenants of a lord and the judges were the tenants themselves. The feudal courts were held for unfree tenants and the lord or his steward was the judge.
The earl presided over the shire court. He received one-third of the profits of justice. The judges were the owners of certain pieces of land. The shire court was held twice a year. There was little distinction between secular and spiritual jurisdiction. A bishop sat on the shire court. The shire court fulfilled all three functions of government: judicial, legislative, and executive.
The courts had no efficient mode of compelling attendance or enforcing their orders, except by outlawing the offender, that is, putting him outside the protection of the law, so that anyone might kill him with impunity. In grave cases, a special expedition could be called against an offender.
The individual wronged had his choice of payment in money or engaging in a blood feud. The sums of money of the system of bot, wer, and wite were enormous, and often could not be paid. Then a man could be declared outlaw or sold as a slave. If a person was outlawed, he also forfeited all his goods to the king.
Cases of general importance concerned mayslaying, wounding, and cattle-stealing.
A person convicted of murder, i.e. killing by stealth or robbery [taking from a person's robe, that is, his person or breaking into his home to steal] could be hung and his possessions confiscated.