It is a pity that the Islam currently in the minds of the simple Muslims...
We have pondered over the verses that have the word Wali or Walis in them and have studied them all briefly. We have observed that God is Islamic Society's Wali, there is no helper for the faithful other than God and God should be the Ruler over all affairs of mankind is a subject that is consistently upheld in the Glorious Qur'an. The meanings may be confusing to some people and we want to remind them that our discussion is not about Lord of the Worlds' Innate Rule i.e., Rule by Creation.
It is a fact that the Lord manages the movement of the earth and the skies with His Controlling Will. Our talk relates to the fact that the laws in the peoples' lives and the individual and the community relationships in the Islamic society should be based on the Commandments from God. In other words the legal Ruler of the Islamic and Qur'anic society under the Islamic system and that of Imam Ali could only be God and only God.
Now a question arises, "what is meant by the Ruler is God ?" The Sublime Lord is not going to come to the people to implement His commandments. Furthermore, only a human being can rule over other humans. It is vital that the control of people's affairs should be in the hands of a person. However, when we talk about a person, it does not imply that we are emphasizing a single individual and negating plural leadership.
What we are saying is that there is a need for an individual who can take the reins of people's affairs in his hands, otherwise, if there is law in a society - it may even be God's law - but there is no commander, ruler or a committee; in short, if there is no administrator to implement the law in a human society, its systems will not function. Who can such an individual be?
Who is that individual or individuals with the right to rule over the society; who have been recognized as the Wali of the society; who have to take the responsibility of Wilayat. There have been several answers to this question. Historical facts also give several answers.