But you, O sacred audience, who listen to my words, my human flock and field in Christ, offer your exercise of the virtues and your progress in them as a birthday gift to the Mother of God: both men and women, elderly people along with younger ones, rich and poor, leaders and subjects, those of absolutely every race, age, rank, profession and branch of learning. Let none of you have a soul which is barren and without fruit. Let nobody be unloving or unreceptive to the spiritual seed. May each of you eagerly accept this scelestial seed, the word of salvation (cf. Luke 8:11), and by your own efforts bring it to perfection as a heavenly work and fruit pleasing to God. Let no one make a beginning of a good work which brings no fruit to perfection (cf. Luke 8:14), nor declare his faith in Christ only with his tongue.
Saint Gregory Palamas, The Homilies, Mount Thabor Publishing (Waymart, PA: 2009) p. 336. This is really a lovely volume, by the way.