Faith means… unflinching trust in something sublime.
Bhagavad Gita 2.41,
Caitanya Mahaprabhu has recommended that everyone chant the Hare Krishna mantra just to cleanse the dust from the heart. If the dust of the heart is cleansed away, then one can actually understand the importance of the holy name.
Nectar of Devotion, Chapter 12,
One should learn how to cry for the Lord. One should learn this small technique, he should be very eager and actually cry to become engaged in some particular type of service, This is called 'laulyam' and such tears are the price for the highest perfection. If one develops this 'laulyam', or excessive eagerness for meeting and serving the Lord in a particular way, that is the price to enter into the kingdom of God. — The Nectar of Devotion, Page 83.
Whoever sees Lord Krishna sees a festival. His face and body are fully satisfying for everyone to see.
Srimad Bhagavatam 9.24.65,
Lord Shambhu (Shiva) the greatest of Vaishnavas.
Srimad Bhagavatam 12.13.16
There is no question of darkness where there is light and Krishna consciousness is light that dispels the darkness of material sense enjoyment.
Srila Prabhupada in his book Teaching of Lord Chaitanya
Simply by chanting the holy name of Krishna one can obtain freedom from material existence.
Sri Chaitanya Caritamrta,
Adi Lila 7.73