The wheel of time runs continuously uninterrupted. This is the reason that everything in this world is ever changing.

In the fourth chapter of the Bhagwat Geeta, Bhagwan Shri Krishna has clearly stated -

• bahūni me vyatītāni janmāni tava chārjuna
  tānyahaṁ veda sarvāṇi na tvaṁ vettha parantapa (4:5)

  Both you and I have had many births, O Arjun. You have forgotten them, while I remember them all, O Parantapa.

• ajo ’pi sannavyayātmā bhūtānām īśhvaro ’pi san
  prakṛitiṁ svām adhiṣhṭhāya sambhavāmyātma-māyayā (4:6)

  Although I am unborn, the Lord of all living entities, and have an imperishable nature, yet, I appear in this world by virtue of Yogmaya, My divine power.

• yadā yadā hi dharmasya glānir bhavati bhārata
  abhyutthānam adharmasya tadātmānaṁ sṛijāmyaham (4:7)

  Whenever there is a decline in righteousness and an increase in unrighteousness, O Arjun, at that time I manifest Myself on earth.

• paritrāṇāya sādhūnāṁ vināśhāya cha duṣhkṛitām
  dharma-sansthāpanārthāya sambhavāmi yuge yuge (4:8)

  To protect the righteous, to annihilate the wicked, and to re-establish the principles of dharma I appear on this earth, age after age.

• From the above verses, it becomes clear that Satyug, Treta, Dwapar, and Kaliyug have been recurring since time immemorial. Hiranyakashyap, Ravana, and Kansa have taken birth many times and God also has descended many times. This has been going on since time immemorial. In this way, these four ‘Yuga’ have recurred many times.

• When Bhagwan Shri Krishna says that you and I have taken many births, it clearly implies that such ‘Mahabharat’ wars have been fought many times. From this, the prophecy made by Maharishi Aurobindo proves to be true that, “Shri Krishna descended on earth on the 24th of November 1926.”

• By the end of each ‘Yuga’, when the religion loses its true meaning and gets deformed and there is darkness in the world, then the Supreme Power descents on earth and eliminates the ‘Tamsik’ tendencies and establishes the ‘Sattvik’ power and goes back to its divine abode. This process will continue in the world.

Shri Krishna is ‘Ananda’. He supports the evolution through the Overmind leading it towards the Ananda.

- Shri Aurobindo

• The religious teachers of this age have separated the physical and spiritual realms into two parts by an imaginary line. Interference of one realm into another is strictly forbidden.

• ‘Spiritual Science’ which is the father of physical science, is being controlled by a class that has no knowledge about it. This unauthorized control has put the entire world in intense darkness. Even in the so-called developed countries, such religious teachers rule. They are even giving certificates, absolving them of all sins, in exchange for money. In this way, people are now in deep trouble. This shows that the time of Bhagwan Shri Krishna to appear before the world is very near. The massive genocide and the one-sided rule of the ‘Tamsik’ forces clearly show that the Supreme Power is about to reveal itself. Many saints have made a prophecy in this regard.

• Even Jesus Christ has prophesised the appearance of the ‘Soul of truth’ by the end of this era. Jesus said, “It is for your benefit that I am going away. Unless I go away, the comforter will not come to you; but if I go, I will send Him to you.”