In this article, some parallels between the Soliloquia and Confessiones are revealed, particularly as concerning the self-knowledge (nouerim me) and the knowledge of God, two elements that the article links to the augustinian concept of confessio, in its different meanings, such as confessio laudis, confessio fidei, confessio peccatorum, confessio amoris, as well as the implications that this confessio has with other elements, such as the petitio considerationis, that is, the request made by Saint Augustine to God to be heard. The presence of the petitio considerationis has been analyzed not only in the text of the Soliloquia, but also within the text of the Confessiones, following its traces through four psalms where this petitio considerationis has left its marks, to indicate the various elements in which St. Augustine invites us to reflect, and highlighting, in particular, the importance that the Sacred Scripture has for St. Augustine. Finally, the presentation of the reading strategies and the implicit readers that St. Augustine presents both within the Soliloquia and within the Confessions is discussed.