Sree Sree Guru Gaurangau Jayatah!
The obstacles to pure devotion for a neophyte aspirant are attraction for money, sex connection and name and fame. If anybody has such attraction he cannot get suddha-bhakti, what to speak of Prem-bhakti of Vrindavan. So Sri Krishna has appeared as Narasimhadev to rescue the conditioned souls from such attractions. Narasimhadeva has killed Hiranyakasipu. 'Hiranya' means gold or money. 'Kasipu' means 'bed' signifying sex enjoyment and along with that is also desire for name and fame. Narasimhadeva will kill this demon existing in our hearts. Of course, Prahlad is also existing in our hearts. So, Narasimhadeva not only removes obstacles, but also gives pure devotion.
--- Jagad-guru His Divine Grace Srila Bhakti Ballabh Tirtha Goswami Maharaj