Read the text from Richard Wilhelm's translation of the I Ching
The gathering together of people in large communities is either a natural occurrence, as in the case of the family, or an artificial one, as in the case of the state. The family gathers about the father as its head. The perpetuation of this gathering in groups is achieved through the sacrifice to the ancestors, at which the whole clan is gathered together. Through the collective piety of the living members of the family, the ancestors become so integrated in the spiritual life of the family that it cannot be dispersed or dissolved.
Where men are to be gathered together, religious forces are needed. But there must also be a human leader to serve as the centre of the group. In order to be able to bring others together, this leader must first of all be collected within himself. Only collective moral force can unite the world. Such great times of unification will leave great achievements behind them. This is the significance of the great offerings that are made. In the secular sphere likewise there is need of great deeds in the time of GATHERING TOGETHER.