Henry Chadwick notes, “Some Christians late in the fourth century, especially round Brescia, walked barefoot after the example of Moses at the burning bush or the prophet Isaiah who went barefoot for three years. Successive bishops deplored this, evidently in vain. Much ancient evidence records the axiom that for cultic acts bare feet are necessary; Augustine himself found it impossible to stop the practice when he became a bishop. Monks in ancient Egypt removed their shoes for communion. In Syria it was customary for candidates for baptism, in the West for Rogation processions.”