The entire point of our work is to give back the complexity of the relations between Franz Rosenzweig, his work, The "Star of Redemption", and his readership. The "Star of Redemption" is known as a difficult book, whose language is as many conceptual as literary. But the very difficulty of the Rosenzweig's thought in The "Star" is to keep in bound the dialogical dimension,which is participating to a lively existence through the letters he wrote to his friends -, and the textual dimension, which tend to be a world in itself - a book is something that is self-sufficient. Can we be satisfied by the idea that The Star is only a transition between two states: between a philosophical point of view – where is no hope – and a revealed one – where is hope and orientation? The Star is more as simply a transition. Rosenzweig speaks also of a Threshold and a Gate. With these two terms a tension inhabits The "Star" between a revealed life which begins inside the book and a revealed life which begins outside the book. Author, work and readership will have a significant role to play in this problem.