tattva-vastu — krsna, krsna-bhakti, prema-rupa
nama-sankirtana — saba ananda-svarupa

The Absolute Truth is Sri Krsna, and loving devotion to Sri Krsna exhibited in pure love is achieved through congregational chanting of the holy name, which is the essence of all bliss.

(Srila Prabhupada's translation of Cc Adi 1.96)