In today's Gospel reading from Luke 11, Jesus considered his generation to be an evil one because it sought a sign. He pointed out that he himself was a sign to his generation. Jesus is indeed the greatest sign to all of us, the only sign we need to see. To those who chase after miracles, you only need to look at Jesus to see that he is also the greatest and only miracle we need to see. If he is not good enough for you, no other sign or miracle will be.