In today’s passage, Jesus has just finished teaching when the Pharisees approach him and ask for a sign. This is just another way of asking their favorite question: “What gives you the authority to teach these things?” They are asking Jesus to prove that God is really with him. Jesus answers that his resurrection shall be a sign, just like Jonah emerging from the whale after three days. The Resurrection of Jesus is a sign to the Pharisees, but it is also a sign to us. Paul tells us in 1 Corinthians 15:14 that if Christ is not raised then our faith is in vain. The Resurrection is a sign to us that we can trust in Jesus Christ as the Messiah, and do not need to continually look for signs from God to see whether or not he is angry with us.
Michael Riggins