Five hundred and ten years ago, Lord Krsna appeared as Sri Caitanya Mahaprabhu in Navadvipa, West Bengal. The following account of His appearance is from Sri Caitanya-caritamrta (Adi-lila 13.63-94), by Krsnadasa Kaviraja Gosvami.
Before the appearance of Lord Caitanya Mahaprabhu, all the devotees of Navadvipa used to gather in the house of Advaita Acarya. In these meetings of the Vaisnavas, Advaita Acarya used to recite Bhagavad-gita and Srimad-Bhagavatam, decrying the paths of philosophical speculation and fruitive activity and establishing the superexcellence of devotional service….
But Sri Advaita Acarya Prabhu felt pained to see all the people without Krsna consciousness simply merging in material sense enjoyment….
Srila Advaita Acarya Prabhu thought, "If Krsna Himself appears to distribute the cult of devotional service, then only will liberation be possible for all people."
With this consideration in mind, Advaita Acarya Prabhu, promising to cause Lord Krsna to descend, began to worship the Supreme Personality of Godhead, Krsna, with tulasi leaves and water of the Ganges. By loud cries He invited Krsna to appear, and this repeated invitation attracted Lord Krsna to descend….
In the month of January in the year 1406 of the Saka Era [A.D. 1485], Lord Sri Krsna entered the bodies of both Jagannatha Misra and Saci….
Jagannatha Misra told his wife, "In a dream I saw the effulgent abode of the Lord enter my heart. From my heart it entered your heart. I therefore understand that a great personality will soon take birth…."
Thus in the year 1407 of the Saka Era in the month of Phalguna [March-April] on the evening of the full moon, the desired auspicious moment appeared….
When the spotless moon of Caitanya Mahaprabhu became visible, what would be the need for a moon full of black marks on its body? Considering this, Rahu, the black planet, covered the full moon, and immediately vibrations of "Krsna! Krsna! Krsna!" inundated the three worlds. All the people thus chanted the Hare Krsna maha-mantra during the lunar eclipse, and their minds were struck with wonder. When the whole world was thus chanting the holy name of the Supreme Personality of Godhead, Krsna in the form of Gaurahari [Caitanya Mahaprabhu] appeared on the earth.
In all the revealed scriptures of Vedic culture, devotional service to Lord Krsna is explained throughout. Therefore devotees of Lord Krsna do not recognize the processes of philosophical speculation, mystic yoga, unnecessary austerity and so-called religious rituals. They do not accept any process but devotional service.