Why did Imam Khomeini maintain that Islamic system is obliged to undertake implementation of law?

Imam Khomeini sought to establish a model society based upon Islamic constitution and norms

In the course of its revolutionary developments under Imam Khomeini's guidance, the Iranian nation cleansed itself of the dirt and impurities accumulated during the tãghũtī past and purged itself of foreign ideological influences, thus returning to the authentic intellectual standpoints and world view of Islam. The mission of the Constitution is to realize the ideological objectives of the Islamic movement.

Divine prophets came with aim of building human societies, Imam Khomeini stressed

Imam Khomeini through his theological works stressed that Prophets had come to actualize this potential essence and develop man into a Divine creature.

Imam Khomeini stressed moral and ethical approaches

Why did Imam Khomeini maintain that Islamic system is obliged to undertake implementation of law?

Imam Khomeini revived pure justice of Islam

Imam Khomeini revived pure and genuine system of Islamic justice in contemporary history and at sensitive juncture when the world had been plunged into moral and social decline.

Imam Khomeini defined Ghadir as most magnificent feast

Imam Khomeini through his theological works and historical messages maintained that Ghadir is the completion of the religion, the perfection of God’s greatest bounty, the most magnificent feast of Allah; it is the feast for the righteous people, followers and supporters of the holy Prophet of Islam.

Diverse dimensions of Imam Ali (PBUH)’s personality

Imam Khomeini, the late founder of the Islamic Republic, once said in a historic message that the multifarious dimensions of this great personality are beyond human assessment.