The Indian concept of cosmic age cycles or the Yuga cycles is the basis for the spiritual evolution of life in the solar system. In every yuga, there manifest a certain number of great souls or mahatmas for the spiritual guidance of the human race. In a Yuga consisting of lakhs of years, four such mahatmas appear. For example, the present Yuga (Kali Yuga) has 4,32,000 years, and this Yuga commenced only about 5200 years ago. There is a Sandhi Guru (like Sri Krishna), who appeared in between the beginning and end of two yugas. Thus, there will be five Epochal Gurus in a Yuga. Four Yugas constitute a Chaturyuga or Agequartet. So there will be 20 epochal gurus in a Chaturyuga. There are 71 Chaturyugas in the span of a Manvantara, which is the aggregate of 71 Chaturyugas. So 71 X 20, that is 1420 gurus in an age quartet.
This is the 28th Chaturyuga in the present Manvantara, whose authority is Vaivasvata Manu. Spiritual evolution is a long long process involving many cosmic ages. At the end of a Manvantara, the process of evolution of jivas (individual souls) reaches the desired level. And then there is dissolution (Pralaya). After that, a new Manvantara begins. Sanatana Dharma or Hinduism is the culture of such gurus under the Manus. Manvantara is named after Manu, who is actually the creator of a solar system, the universe of us. There is no other creator god except Manu, who is the authority of every episode of creation. Spiritual renewal of mankind through a chain of spiritual masters is an ever ongoing process lasting many cosmic ages till all life forms attain perfection and finally merge with the Supreme Light. So Hindus do not accept the idea of a final messenger of God or an only son of God.
Secondly, the evolution of spirit means its reincarnation many times in a cosmic age. The prophetical religions have no such concept. They do not say logically how the creation took place and life evolved on the planet. They do not teach about karma and the theory of rebirth. In just one birth no human being can evolve fully. It takes hundreds of birth for a man to evolve fully with virtues like truthfulness, compassion, foresight, omniscience, transcendence, etc. A soul can become one with God, only after passing through many spiritual planes or avasthas.
The concept of spiritual stages or mandalas is another uniqueness of Sanatana Dharma. The Supreme Light manifests itself through ten spiritual dimensions. After the Bhumandala (the earth plane), there are the Bhuta mandala, Pitru mandala, Deva mandala, Trimurti mandala, Rishi mandala (Ganapati mandala), Parashakti mandala, Ishwara mandala, Daiva mandala, Brahma mandala, and finally, the Parabrahma mandala, the nucleus. Present-day Hinduism has limited itself to the Trimurti mandala, arresting the ongoing process of spiritual evolution, reveals Navajyoti Sri Karunakara Guru.
According to Karunakara Guru, a soul has to pass through the above said spiritual dimensions or Avasthas to attain Mukti or merge with the Supreme Light. It is made possible only through a Kalanthara Guru, an epochal Guru who comes as the authority of Parabrahm. The Vedic tradition limited Hinduism or Sanatana Dharma to the Devi Devas, neglecting the guidance of Kalanthara Gurus like Sri Krishna, Buddha, Mahavir, Guru Nanak, Kabir, and others. That is the reason behind the debacle of Hinduism.
According to the Prophetical religions, a man has only a single chance of life in the whole duration of this creation which shows the abject ignorance about the process of creation and evolution of life in the solar system.
