"Communion is the fruit and demonstration of that love which springs
from the heart of the Eternal Father
and is poured out upon us through the Spirit which Jesus gives us
(cf. Rom 5:5), to make us all "one heart and one soul" (Acts 4:32).
It is in building this communion of love that the Church
appears as "sacrament", as the "sign and instrument of intimate
union with God and of the unity of the human race". (JPII-Novo
Millenio Ineunte, #26)