What, according to the ideas of the people of the Middle Ages, was the need for estates?

The division of people into estates appeared in the Ancient World. In the Middle Ages, people were also divided into estates. There were three main ones – the clergy, chivalry and townspeople, which included free peasants. Dependent peasants were not considered an estate. Each of these estates had its own rights and responsibilities. It was believed that only a representative of one class or another could cope with their duties. So, for example, in the opinion of a medieval man, only the clergy could speak with God, i.e. representatives of other estates were not given this and they did not have sufficient knowledge for this.