The Krsna consciousness movement has spread all over the world within a very short time (within five years), and mundane people are very astonished at this. However, by the grace of Lord Sri Caitanya Mahaprabhu, we understand that everything is possible by the grace of Krsna. Why does Krsna have to take five years? In five days He can spread His name and fame all over the world like wildfire. Those who have faith and devotion to Krsna can understand that these things happen so wonderfully by the grace of Sri Caitanya Mahaprabhu. We are simply the instruments. In the fierce Battle of Kuruksetra, Arjuna was victorious within eighteen days simply because Krsna’s grace was on his side.

Srila Prabhupada, Cc. Madhya 4.79 purport