'Flesh' in the Bible

My father imposed heavy demands on you; I will make them even heavier. My father punished you with ordinary whips; I will punish you with whips that really sting your flesh.'"

and followed the advice of the younger ones. He said, "My father imposed heavy demands on you; I will make them even heavier. My father punished you with ordinary whips; I will punish you with whips that really sting your flesh."