The conception and development of wonder and astonishment is one of Isaac’s most influential contributions to Syriac theology. The conclusion briefly points to areas where further study will reveal the depth of influence that Isaac’s use of the terms wonder and astonishment have had on later Syriac authors. In particular, the conclusion examines areas where Isaac’s conception of wonder and astonishment influenced two eighth-century East-Syriac authors who had recourse to his texts: John Dalyatha and Joseph Hazzaya. First, this chapter points out that John and Joseph follow Isaac in connecting wonder with the cessation of impulses. In addition, John Dalyatha manifests a linguistic dependence on Isaac with his use of the constellation of the terms astonishment, wonder, silence, and limit, while Joseph Hazzaya depends on Isaac in connecting wonder with both study and tears.