But put forth thine hand now, and touch all that he hath, and he will curse thee to thy face.
Curse thee to thy face - in antithesis to God's praise of him (Job 1:8), "one that feareth God." Satan's words are too true of many. Take away their prosperity and you take away their religion (Malachi 3:14).
Curse thee - Umbreit translates, as in Job 1:5, 'insolently renounce thee;' so Maurer and Gesenius.