Isaiah 59 portrays a deity in armour warring against rebellious human foes. In this historical investigation, Yoder Neufeld maps the transformation of an ancient tradition into a creative new reading in which God's people put on God's armour and go to battle against God's heavenly foes, as in Ephesians 6. The Pauline recasting of the Isaianic motif, argues the author, is a bracing one.