What is Guru Kripa?

Sri Ramana Maharshi

Guru is the Self. Sometimes in his life a man becomes dissatisfied with it, and, not content with what he has, he seeks satisfaction of his desires, through prayer to God etc. His mind is gradually purified until he longs to know God, more to obtain His Grace than to satisfy his worldly desires. Then, God's grace begins to manifest. God takes the form a Guru and appears to the devotee, teaches him the Truth and, moreover, purifies his mind by association. The devotee's mind gains strength and is then able to turn inward. By meditation it is further purified and it remains still without the least ripple. That calm expanse is the Self. 

The Guru is both external and internal. From the exterior he gives a push to the mind to turn inward; from the interior He pulls the mind towards the Self and helps in the quieting of the mind. That is guru kripa. There is no difference between God, Guru and the Self.