"Skin" here is a metonym for Job's life. AT: "A person will do anything to save his own life, even accept the loss of possessions and loved ones" (See: [[rc://en/ta/man/translate/figs-metonymy]])
Satan means that if God attacks Job, he will see how Job responds. AT: "But now, if you stretch out your hand and touch his bones and his flesh, you will see that he will curse you to your face"
Here "hand" refers to God's power to act. "But now use your power." See how you translated this in [Job 01:11](../01/09.md). (See: [[rc://en/ta/man/translate/figs-metonymy]])
# touch
Here "touch" represents the action of harming. AT: "attack" (See: [[rc://en/ta/man/translate/figs-metonymy]])
# his bones and his flesh
This expression represents Job's body. (See: [[rc://en/ta/man/translate/figs-synecdoche]])
# curse you to your face
See how you translated this in [Job 01:11](../01/09.md).