I was reluctant when this tome about the infancy narratives had been recommended, and after the first chapter discovered this was no ordinary book. There are myriads of commentaries, but none like this! This book elaborates at length on the short gospel narratives of the birth of Jesus, and how the NT authors had woven OT material into those narratives. It elaborates on the role of the Blessed Virgin Mary: not as some wench who did as God told her, but as the first disciple of Christ to say Yes to the call of God; not merely a mother to Christ, but the Mother of the people of God by her fiat. For those who already believe, and even for those who don't, it elaborates why the incarnation is such an awesome historial event, not only in human history, but in salvation history.
Fr. Brown writes with erudition, and, while his audience is scholarly, even novices can read these gems with considerable ease. I initially intended to read the book straight through, but the density and intensity of the material suggested that a more devotional, gradual read would be more beneficial. I admit this is hard to do, because once embarked, these insights propel one to read as much as one can as fast as one can. However you decide to read it, I cannot think of a better introduction, as well as advanced scholarship, that will not leave one unchanged.