Reverend Dr. Timothy Delkeskamp, senior pastor of Ascension Lutheran Church in Thousand Oaks, California, talks about the Gospel of Mark, the eighth chapter, in which Peter tries to dissuade Jesus from the trials he faces ahead. But Christ rebukes him, saying, "Get behind me, Satan! For you are setting your mind not on divine things but on human things." What can we learn from this tough message? Pastor Tim sheds light on the immortal words.