Love of God
Love of God is transcendental to liberation [mukti], and thus it is called the fifth stage of spiritual realization, above the stage of liberation.
Srimad Bhagavatam Introduction.
Effects of Congregational Chanting
By performing congregational chanting of the Hare Krishna mantra, one can destroy the sinful condition of material existence, purify the unclean heart and awaken all varieties of devotional service.
Chaitanya Caritamrta on Antya Lila 20.13
Most Important Process of Devotional Service
Of the nine processes of devotional service, the most important is to always chant the holy name of the Lord. If one does so, avoiding the ten kinds of offenses, one very easily obtained the most valuable love of Godhead.
Chaitanya Caritamrta Antya Lila 4.71
Being Very, Very Happy
If the surface of the globe is overflooded with the chanting of the Hare Krishna mantra, the people of the world will be very, very happy.
Purport on Srimad Bhagavatam on 4.24.10