Le cycle hebdomadaire syro-antiochien est un cycle liturgique férial, simple et non eucharistique. Le livre de prières dont on sert pendant ces jours fériaux est appelé en syriaque Shehimo, ce que signifie « simple » ou « banal ». La valeur théologique des offices du Shehimo réside dans leur fonction actualisante qui transforme les événements salvifiques du passé en réalité vécue constamment par les fidèles à travers la mémoire. L’étude du livre, de sa structure liturgique, de son contenu et de ses sources révèle la grande richesse du cycle hebdomadaire qui a su assimiler plusieurs textes bibliques, apocryphes, patristiques et historiques afin de les présenter aux fidèles d’une manière simple pour les accompagner dans leur voyage hebdomadaire entre le premier et le huitième jour de la semaine. D’autre part, l’économie du salut réalisée par le Verbe de Dieu constitue la base solide sur laquelle se fondent les textes du Shehimo. Dieu a crée l’homme motivé par son amour et lorsque l’homme est tombé dans le péché, Dieu l’a sauvé par le même amour divin invraisemblable. L’incarnation du Fils, sa vie, son enseignement, ses miracles, sa crucifixion, sa mort et sa résurrection visaient toujours le salut de l’homme. D’une manière poétique, imaginative et mélodique, le chrétien se souvient de toute cette œuvre salvifique et divine que le Christ a réalisée en sa faveur, il affirme son attachement à cette œuvre, il chante la gloire de son Sauveur et il exprime ardemment son désir d’être digne de lui chanter éternellement sa gloire dans son Royaume céleste. / The Syro-Antiochian weekly cycle is an ordinary, simple and non-eucharistic liturgical cycle. The prayer book which we use during the ordinary days, is called Shehimo in Syriac, which means “simple” or “trivial”. The theological value of the services of the Shehimo lies in their actualizing function which transforms the salvational events of the past into a reality that is constantly lived by the faithful through their memory. The study of the book, of its liturgical structure, its content and its sources, reveals the great richness of the weekly cycle which was able to assimilate many biblical, apocryphal, patristic and historical texts in order to present them to the faithful in a simple manner so as to accompany them in their weekly journey from the first to the eighth day of the week. On the other hand, the economy of salvation that was realized by the Word of God constitutes the solid base on which the texts of the Shehimo are founded. When God created man He was motivated by His love; when man fell in sin, God has saved him with the same inconceivable divine love. The incarnation of the Son, His life, His teachings, His miracles, His crucifixion, His death and His resurrection always aimed at the salvation of man. In a poetic, imaginative and melodic way, the Christian believer remembers all this salvational and divine work that Christ has accomplished for his sake, and thus the Christian believer affirms his attachment to this work. He chants the glory of his Savior and expresses passionately his desire to be worthy of eternally chanting to Him His glory in His heavenly kingdom.