PURPORT

The word parama-kalyana is significant because Krsna, in any of His incarnations, appears in order to protect the sadhus (paritranaya sadhunam). The sadhus, saintly persons or devotees, are always harassed by nondevotees, and Krsna appears in His incarnations to give them relief. This is His first concern. If we study the history of Krsna's life, we shall find that for most of His life He predominantly engaged in killing demons one after another.