 In Antiquity, he was often confused with the bishop and writer Anastasius I of Antioch (559 – 598), and the authorship of various works attributed to Anastasius of Sinai is still vigorously disputed.A canon has been tentatively accepted by modern scholars, but even among these Anastasian works there are spurious sections.His writings concern questions and answers about issues of Christian dogma, ritual, and lifestyle (catechism); sermons; and exegesis.