Associating With The Supreme Lord Directly
To associate with the holy name and chant the holy name is to associate with the Personality of Godhead directly.
Greatest Boon of Lord Chaitanya
Lord Caitanya has given the greatest boon: in this age one simply has to chant the holy name of God to attain perfection in spiritual life.
Srimad Bhagavatam 3.21.7,
Srila Prabhupada.
Effect of Chanting The Hare Krishna Maha Mantra
The holy name of Krishna is so attractive that anyone who chants it — including all living entities, moving and nonmoving, and even Lord Krishna Himself — becomes imbued with love of Krishna. This is the effect of chanting the Hare Krishna maha-mantra.
Chaitanya Caritamrta, Antya Lila 3.268,
Srila Prabhupada
Getting Krishna
The ultimate goal of Bhakti is to get Krishna and we get it by taking shelter of the holy name.
Achieve All The Benefits of Spiritual Life
To chant the holy name and dance in ecstasy is so easy and sublime that one can achieve all the benefits of spiritual life simply by following this process.
Srimad Bhagavatam 6.2.11,
Srila Prabhupada.
Qualities of A Prayer
The Hare Krishna mahamantra is also a prayer, for a prayer addresses the Supreme Personality of Godhead by His name and invokes good fortune by petitioning the Lord to allow one to engage in His devotional service.
Srimad Bhagavatam 4.24.69,
Srila Prabhupada.