“I myself … say that prayers and thanksgiving made by worthy persons are the only sacrifices that are perfect and well-pleasing to God” (Justin Martyr, Dialogue with Trypho the Jew, 117.2).
“Because of all your wonderful dispensation towards us, with open mouths and uncovered faces we give you thanks and glorify you without ceasing in your Church, which has been redeemed by the precious blood of your Christ, offering up praise, honor, thanksgiving and adoration to your living and life-giving name, now and at all times forever and ever” (The Liturgy of Saints Addai and Mari).