Hiera Grammata: A Greek expression which means the Sacred Scriptures. This is in the Second Epistle to Timothy 3,1417. It is a unique locution in the New Testament. The purpose of this dissertation are the linguistic- morfological and semantic analysis of the expression; identify its functional aspects in the vital envirornment of the primitive community; and its contribution to the current Church. The synonym to Hiera Grammata in the Bible are: Biblia ta Hagia - the Holy Books (1Mc 12,9), Graphais Hagiais - the Holy Scriptures (Rm 1,2); similar extra biblical expression are: Hieron Grammaton - Sacred Sacriptures in the post-apostolic writing. Hiera Grammata expresses the Hebraic Scriptures [Tanak] in its Greek version [LXX]. In the Sitz im Leben Ephesus`s Church the locution Hiera Grammata had a diversity of functions, among them the apologetic one: protect the primitive christian community from the fake gnosticism teaching, thatin its heresy, reduced and/or excluded the symbolic and sacred value of the faith tradition in the Scripture inspired by [theopneustos]; confusing the christians, kerygmatic function: the Hiera Grammata were a useful instrument [ophelimos] in the evangelization of the Diaspora`s Jews and pagans, because of that the Sacred Scripture are able to make thee wise unto salvation through faith which is in Christ Jesus (2Tm 3,15). The nature and the functions of the Hiera Grammata give them a semantic load and theological sense and its pedagogical, savior and transcendent meanings are at the service of identity and mission of Christ`s disciples and missionaries nowadays.