Small composition of great saint father of Western Church of the III century священномученика Киприана, bishop Карфагенского (210-258), "About prayer Lord", written in 251-252, carries morally-ascetic and exegectical maintenance simultaneously. Teaching christians, as correct to pray, and speaking about the special meaningfulness among other christian prayers of prayer "Pater our", as outspoken and left to us by Lord by Jesus By Christ, св. Киприан calls to interpretation of lines of this prayer. Along with an address to God Отцу through Son Divine - Jesus Christ, through That we got the great gift of adoption and we can now with audacity call to God as to Father, becoming His sons on plenty, prayer is Lord is, from the point of view св. Киприана, by the summary of basic moments of christian studies. This composition св. Киприана will help to see a reader in the new light of word of this daily prayer, to pronounce her on Divine liturgy, and at home yet more consciously, opening for itself the saving depths of богомыслия in the known lines.