People Don't Need a Sign. They Need a Relationship With Jesus.
Mark 8:11 The Pharisees came and began to question Jesus. To test him, they asked him for a sign from heaven. 12 He sighed deeply and said, “Why does this generation ask for a sign? Truly I tell you, no sign will be given to it.People who don't truly know God, don't trust Him. The Pharisees tried to squeeze Jesus into their religious mold. They asked questions, they tested him against their warped standards, and they even asked for a sign.
All of this "noise" grieved the Lord. The only thing they needed to do is seek to get into relationship with Jesus. Signs (things done to impress others) are for the circus.
A relationship with the Lord and Savior answers the questions and satisfies the soul.