There are strengths and weaknesses in earlier studies that propose for the Prologue of John's Gospel either a concentric (M.-E. boismard) or a spiral structure (I. de la Potterie). The modified versions of these proposals, recently advanced by M. Coloe and B.T. Viviano, are not convincing. This article seeks to demonstrate that evidence of the Prologue's concentric and dynamic structure is to be found in the introduction of a new subject ('we') in John 1,14c, which marks the beginning of a new section in the structure of the Prologue's argumentation. the 'we' of vs. 14c stands in relation to the 'children of God' of vs. 12. Consequently, vs. 14ab is to be viewed (pace M.-E. Boismard) as the crucial turning point at the center of the structure of the Prologue.