From John of Apamea to Mark's Gospel: Two Dialogues with Thomasios: A Hermeneutical Reading of Horao, Blepo, and Theoreo combines two theological fields of investigation. The first is related to the Patristic theology of Eastern Syrian Christianity and the second resides in the field of Biblical theology. The research articulates the two fields, which complement each other through a logic exposition in that the theological conceptions of John of Apamea serve as the hermeneutical reading of the verbs of visual perception in the Markan Gospel. The first part expounds the problem related to the quest of the historical John of Apamea, an overview of the problem of his identity based upon the most important critical works attributed to him, proposing a plausible solution. The notion of the spiritual perception of the soul is intrinsically connected with the notion of "spiritual exegesis" and "spiritual senses", essential thoughts in the theology of the dialogues with Thomasios. Applying this methodological approach to the Scripture, the second part expounds the topic of the spiritual seeing in Mark's Gospel. The section follows four expositive stages. The first consists of the semantic analysis of the Markan terminology and its psychological implications; the second analyzes the narrative portrait of the seeing of Jesus; the third examines briefly the seeing of the demons; the last stage considers the contemplative attitude of the women in the context of Christ's passion, death, and resurrection. From John of Apamea to Mark's Gospel is essential reading for scholars in Eastern Patristic theology, Biblical theology, and spiritual theology.