The catechism explains:
The Lord's Prayer is the most perfect of prayers. . . . In it we ask, not only for all the things we can rightly desire, but also in the sequence that they should be desired. This prayer not only teaches us to ask for things, but also in what order we should desire them.
The first communities prayed the Lord's Prayer three times a day, in place of the "Eighteen Benedictions" customary in Jewish piety.
According to the apostolic tradition, the Lord's Prayer is essentially rooted in liturgical prayer:
[The Lord] teaches us to make prayer in common for all our brethren. For he did not say "my Father" who art in heaven, but "our" Father, offering petitions for the common body.
In the Eucharistic liturgy the Lord's Prayer appears as the prayer of the whole Church and there reveals its full meaning and efficacy. Placed between the anaphora (the Eucharistic prayer) and the communion, the Lord's Prayer sums up on the one hand all the petitions and intercessions expressed in the movement of the epiclesis and, on the other, knocks at the door of the Banquet of the kingdom which sacramental communion anticipates.
In the Eucharist, the Lord's Prayer also reveals the eschatological character of its petitions. It is the proper prayer of "the end-time," the time of salvation that began with the outpouring of the Holy Spirit and will be fulfilled with the Lord's return. The petitions addressed to our Father, as distinct from the prayers of the old covenant, rely on the mystery of salvation already accomplished, once for all, in Christ crucified and risen.
From this unshakeable faith springs forth the hope that sustains each of the seven petitions, which express the groanings of the present age, this time of patience and expectation during which "it does not yet appear what we shall be." The Eucharist and the Lord's Prayer look eagerly for the Lord's return, "until he comes."
Our Father, who art in heaven, hallowed be thy name;
thy kingdom come; thy will be done on earth as it is in heaven.
Give us this day our daily bread;
and forgive us our trespasses as we forgive those who trespass against us;
and lead us not into temptation, but deliver us from evil.
Pater noster, qui es in caelis:
sanctificetur Nomen Tuum;
adveniat Regnum Tuum;
fiat voluntas Tua,
sicut in caelo, et in terra.
Panem nostrum cotidianum da nobis hodie;
et dimitte nobis debita nostra,
Sicut et nos dimittimus debitoribus nostris;
et ne nos inducas in tentationem;
sed libera nos a Malo.
In honor of the 4th anniversary of the death of our late Holy Father, John Paul the Great, here is a recording of him singing the Pater Noster.
"This is how you are to pray: Our Father in heaven, hallowed be your name,
your kingdom come, your will be done, on earth as in heaven.
Give us today our daily bread;
and forgive us our debts, as we forgive our debtors;
and do not subject us to the final test, but deliver us from the evil one. (Matt 6:9-13)