Give us this day our daily bread.
“Daily bread” may be understood both spiritually and simply, because both meanings help us to understand salvation. For Christ is the bread of life; and this bread is not the bread of all, but it is our bread. And as we say “our Father”, because he is the father of those who understand and believe, so too we say “our bread”, because Christ is the bread of us who touch his body. Now we ask that this bread be given us today, lest we who are in Christ and receive his Eucharist daily as the food of salvation should be separated from Christ’s body through some grave offence that prohibits us from receiving the heavenly bread. For according to his words: “I am the living bread that came down from heaven; if anyone eats of this bread, he will live forever; and the bread that I shall give is my flesh for the life of the world.”
Cyprian, ‘Treatises, On the Lord’s Prayer’ 18, in Manlio Simonetti (ed.), Ancient Christian Commentary on the Scripture, New Testament Ia: Matthew 1–13 (Downers Grove: IVP), 135.