We should offer up doxologies to God with fear and a contrite heart, in order that they may be accepted like fragrant incense.
– St. John Chrysostom
Those who chant should offer their psalmodies with great care to God, Who looks into the hidden recesses of the heart, i.e., into the psalmody and prayer that are done mentally in the heart rather than uttered in external cries.
– Canon LXXV of the Sixth Ecumenical Synod
Psalmody, bringing about choral singing, a bond, as it were, toward unity, and joining people into a harmonious union of one choir, produces also the greatest of blessings: love.
– Saint Basil the Great, Exegetic Homily 10