Mark by Wilfrid Harrington is part of the New Testament Message series, presenting a biblical-theological interpretation of the Gospel of Mark. The author emphasizes that this Gospel is not simply a historical account of Jesus, but rather a theological work conveying a message of faith for the Church. Mark portrays Jesus as the Messiah present in suffering and rejection, with the central theme being the 'theology of the cross', where His identity is revealed through His passion and death. The author also examines the narrative structure and dynamics of the Gospel, including miracles, teaching, conflict, and misunderstandings of the disciples, all leading up to the climax of the passion and resurrection. Overall, this book integrates textual analysis, theological reflection, and pastoral relevance, inviting readers to understand and internalize the meaning of faith in the Gospel of Mark.