The book of Jeremiah contains a rich mix of prophecies in poetic form and in prose form, as well as prose narrative. Questions that have long preoccupied readers is how the book was assembled and for what purpose. If many hands were involved, is the final product a loose collection or is there some overall purpose and meaning in it? Consideration of these questions are complicated by the fact that the Hebrew (Masoretic Text or MT) and Greek (Septuagint or LXX) versions differ not only in length but in arrangement. The focus of this study is chapters 1 - 25 of the MT version, commonly regarded as comprising the first half of the book. By paying attention to what is called the 'Dynamics of the Text', namely how individual passages relate to their immediate and wider contexts, a new understanding of these chapters emerges. The reader is able to discern how effectively they portray the dramatic unfolding of Jeremiah's' prophetic vocation, and how his relationships with God and God's people form an integral part of the book's presentation of the Word of God.