Basil of Caesarea

As the pen is an instrument for writing when the hand of an experienced person moves it to record what is being written, so also the tongue of the just man, when the Holy Spirit moves it, writes the words of eternal life in the hearts of the faithful, dipped "not in ink but in the Spirit of the living God." The scribe, therefore, is the Holy Spirit, because he is wise and an apt teacher of all. And the Spirit writes swiftly, because the movement of his mind is swift. The Spirit writes thoughts in us, "not on tablets of stone but on fleshy tablets of the heart." In proportion to the size of the heart, the Spirit writes in hearts more or less, either things evident to all or things more obscure, according to the heart's previous purity. Because of the speed with which the writings have been finished, all the world now is filled with the gospel.