People really are not so different today than in the days when Jesus walked the earth. They found it hard to believe that He was the Christ, that He had the power others had ascribed to Him. They wanted a sign to prove it. Well, Jesus wasn't about to fall for that trap. He knew that they would simply deny that He has anything to do with it and place the credit elsewhere.
Many people today are the same way. We want a sign. A sign that God loves us. A sign that God is listening. A sign that our prayers have been heard. But the result would be the same. Even now, when we get what we have prayed for, we often ascribe the result to good luck. "Wasn't I lucky" is so frequently heard. God does all the work, and luck gets the credit!
True faith means that we neither look for nor need a sign.Our faith tells us that God not only listens, but also hears us. Our prayers are always answered, even if we do not always understand the response. Sometimes the answer is yes, sometimes no, and sometimes it is something completely different. How many times have you prayed and prayed for something, only to receive not what you wanted but something even better. Even when God says "no" to our prayer, it eventually shows itself as being the best answer.
If each day we ask that God give us what we need and what is best for us, we will never be disappointed. And we will never need a sign, because we will know that our faith is sure and that God always hears us.