Put forth thine hand, to wit, in way of justice and severity, as that phrase is used, Isaiah 5:25 Ezekiel 25:7,13,16. Touch, i.e. afflict or destroy, as this word is used, Genesis 26:11 Ruth 2:9 Psalms 105:15 Malachi 2:8. He will curse thee to thy face; he who is now so forward to serve and bless thee, will then openly and boldly blaspheme thy name, and reproach thy providence, as unjust and unmerciful to him.
Related Commentaries of Job 1:11
Job 1:11
11 But put forth thine hand now, and touch all that he hath, and he will curse thee to thy face.