The appearance of Vasudeva, the Supreme Personality of Godhead as revealed to Devaki, offers the answer to all sectarian differences and varieties of iconography related to the Divine. His appearance is possible when the channels of aural reception are opened by humility and submission to the bona ide representative of the Lord. Only then will the Holy Name and lila of Krishna enter into the kingdom of our hearts.
This current month of October/November is known as "Karttik" in honor of its presiding Deity, Karttik Devi. This is another name for the Daughter of Kirtida, the pleasure potency of Krishna and the ultimate reservoir for all love and devotion. Thus the month of Karttik is especially dear to devotees.
Topics of Lord Nityananda delight the mind, sanctify all hearts, and engage the intellect in pursuing a proper understanding of Lord Caitanya. In the initial verses of Caitanya Caritamrita, Kaviraja Goswami has related the detailed theological explanation of Sri Nityananda Rama, thereby protecting us from misunderstanding the erratic, indiscriminate and inconceivable activities of this crest jewel of avadhutas. Lord Nityananda is so intoxicated with the nectar of Braja Bhakti that we are prone to misunderstand Him, yet proper reverence and appreciation to Him will only attract His mercy.
Radhastami naturally evokes sweet sentiments of joy and celebration which must be blended with crucial philosophical understanding and consequent gravity worthy of the occasion. Gravity must be accompanied by humility, tapasya, discipline, purification, subduing anarthas, chanting 16 rounds per day, following the 4 regulative principles, following Vaisnava etiquette, and sincerely striving to develop the aptitude of servant of the servant of the servant.
In His fierce mood, Lord Nrsimhadeva conquers the demons, thereby protecting the society of devotees from the onslaught of vicious violence from without. He also protects us from the internal manifestation of these demons as the anarthas (unwanted desires) of lust, anger, greed, pride, illusion and envy. These anarthas torment the mind, choke the bhakti-lata, and cover the spiritual nature of the dham within the heart.