Incarnation of Holy Name

In Kali−yuga Krsna has incarnated as the holy name in order to deliver the sinful, who are suffering greatly:
As the Lord says in Bhagavad−gita (4.7):
yada yada hi dharmasya
glanir bhavati bharata
abhyutthanam adharmasya
tadatmanam srjamy aham
"Whenever and wherever there is a decline in religious practice, O descendant of Bharata, and a predominant rise of irreligion−at that time I descend Myself."

In the present age, Kali−yuga, people are very much sinful and are consequently suffering greatly. Therefore Krsna has incarnated in the form of His name, as found in the maha−mantra: Hare Krsna, Hare Krsna, Krsna Krsna, Hare Hare/ Hare Rama, Hare Rama, Rama Rama, Hare Hare.