pasandi samharite mora ei avatara
pasandi samhari' bhakti karimu pracara
pasandi—demons, atheists; samharite—to kill; mora—My; ei—this; avatara—incarnation; pasandi—atheist; samhari'-killing; bhakti—devotional service; karimu—I shall do; pracara—preaching.
"I have appeared in this incarnation to kill the demons [pasandis] and, after killing them, to preach the cult of devotional service."
Lord Caitanya's mission is the same as that of Lord Krsna, as He states in the Bhagavad-gita (4.7-8):
yada yada hi dharmasya
glanir bhavati bharata
abhyutthanam adharmasya
tadatmanam srjamy aham
paritranaya sadhunam
vinasaya ca duskrtam
sambhavami yuge yuge
"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 order to deliver the pious and to annihilate the miscreants, as well as to reestablish the principles of religion, I advent Myself millennium after millennium"
As explained here, the real purpose of an incarnation of Godhead is to kill the atheists and maintain the devotees. He does not say, like so many rascal incarnations, that both atheists and devotees are on the same platform. Sri Caitanya Mahaprabhu, or Lord Sri Krsna, the real Personality of Godhead, does not advocate such an idea.
Atheists are punishable, whereas devotees are to be protected. To maintain this principle is the mission of all avataras, or incarnations. One must therefore identify an incarnation by His activities, not by popular votes or mental concoctions. Sri Caitanya Mahaprabhu gave protection to devotees and killed many demons in the course of His preaching work. He specifically mentioned that the Mayavadi philosophers are the greatest demons. Therefore He warned all others not to hear the Mayavada philosophy. Mayavadi-bhasya sunile haya sarva-nasa. Simply by hearing the Mayavada interpretation of the sastras, one is doomed (Cc. Madhya 6.169).

Link to this page: https://prabhupadabooks.com/cc/adi/17/53

Previous: Adi 17.52     Next: Adi 17.54

If you Love Me Distribute My Books -- Srila Prabhupada