The end of the first millennium was for the Christians of the Syrian East a period of flourishing for their spirituality and for mysticism in particular. The first part of the article considers the historical panorama of the Syrian context, with particular emphasis on certain characteristics of its spirituality and theology. The second part is dedicated to the review of some aspects of Syrian mysticism, on the basis of the works of Joseph Hazzaya, one of the greatest mystics of this period. Joseph presents his teaching on the vision of God in his triple synthesis, where he systematizes various experiences of his predecessors. Every baptized person is called to the vision of God, having passed through certain stages of the spiritual life.