Sri Krishn assumes a manifest form from age to age to destroy impediments that obstruct the smooth flow of righteous impulses such as wisdom, renunciation and restraint, as also to annihilate the demoniacal forces of passion, anger, attachment and repugnance, and to reinforce dharm.
“Age”, as used by Sri Krishn here, does not refer to historical ages like the Golden Age (Satyug) or the Iron Age (Kaliyug). It rather alludes to the stages of rise and fall, of the waxing and waning, of dharm through which human nature has to pass. These are stages of dharm and the human heart has to progress through them.
Goswami Tulsidas has written about it in Ram Charit Manas (7. 10) – the devotional retelling and translation of the Indian epic, Ramayan from Sanskrit into the language of the people by the poet Tulsidas:
“The stages of dharm undergo variation in every heart at all times, not because of ignorance but because of the operation of the divine power of maya.” This is what has been named atm-maya in the sixth verse of the chapter Four of Bhagavad Gita.
Inspired by God, this knowledge is the one which makes the heart a veritable dwelling of God. But how can one know through which Stage one is passing at the moment?
When virtue and moral goodness (sattwa) alone are active in the heart, when passion and ignorance have subsided, when all fears are stilled, when there is no feeling of repulsion, when there is the necessary strength to rest firmly on the signals that are received from the desired goal, when the mind is overflowing with happiness-then alone is one enabled to enter into the Golden Age.
On the other hand, when the forces of darkness (tamas), combined with passion and moral blindness (rajas), are sweeping through, when there are animosities and conflicts all around, the worshipper is passing through the Iron Age (Kaliyug).
When there is predominance of ignorance and abundance of lethargy, slumber and procrastination, that is the stage of the Kaliyug of dharm. The man passing through this stage does not do his duty even though he knows it. He knows what he is forbidden to do, and yet he does it. These stages of dharm, of its ascent and descent, are determined by innate properties.
These stages are the four ages (yug) according to some, the four classes (varn) according to others, and the four levels of spiritual seeking-excellent, good, medium, and low-according to yet others. In all the stages God stands by the worshipper. Nevertheless, there is a plenty of divine favour at the highest stage, whereas the assistance appears to be meagre at the lower stages.
So Sri Krishn tells Arjun that a worshipper who is earnestly devoted to his ultimate goal is a sage, but he can be saved only when the flow of divine impulses such as wisdom, renunciation, and self-restraint, which provide access to the object, is unimpeded. Similarly, doers of wicked deeds are not undone just by the destruction of their nonexistent mortal bodies, because they will be reborn with the same wicked impressions (sanskar) they had earned in the previous life, and do the same evil which they had done before. So Sri Krishn manifests himself in all ages to destroy moral perversions and to strengthen dharm.
Installation of the one changeless God alone is the final destruction of evil.In brief,Sri Krishn has said that he manifests himself again and again, in all circumstances and categories, to destroy evil and foster good, and to strengthen faith in the Supreme Spirit.
But he does this only if there is profound regret in the worshippers’ heart. So long as the grace of the worshipped God is not with us, we cannot even know whether evil has been destroyed or how much of it still remains. From the beginning to the moment of final attainment, God stays by the worshipper at all stages. He manifests himself only in the devotee’s heart. Doesn’t everyone see him when he manifests himself? According to Sri Krishn it is not.
As expounded by Swami Adgadanad Paramhans, most revered Gurudev.