Matthew 16:1-4

Now the Pharisees and Sadducees came up and, in order to tempt him, asked him to show them a Sign from heaven.

Mark 8:11-12

Now the Pharisees came out and started to argue with him, asking him for a Sign from heaven, by way of tempting him.

Luke 11:29-30

As the crowds were thronging to him, he proceeded to say, "This is an evil generation: it demands a Sign, but no Sign will be given to it except the Sign of Jonah;

Treasury of Scripture Knowledge

Summary

And Isaiah said, This sign shalt thou have of the LORD, that the LORD will do the thing that he hath spoken: shall the shadow go forward ten degrees, or go back ten degrees?

Bible References

This sign

Matthew 16:1
Now the Pharisees and Sadducees came up and, in order to tempt him, asked him to show them a Sign from heaven.
Mark 8:11
Now the Pharisees came out and started to argue with him, asking him for a Sign from heaven, by way of tempting him.
Luke 11:29
As the crowds were thronging to him, he proceeded to say, "This is an evil generation: it demands a Sign, but no Sign will be given to it except the Sign of Jonah;