2 Kings 20:9

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

Isaiah 38:7-8

And this shall be a sign unto thee from the LORD that the LORD will do this thing that he has spoken:

Matthew 16:1-4

The Pharisees and the Sadducees came to tempt him; they asked him to show them a sign from the heaven.

Mark 8:11-12

And the Pharisees came forth and began to argue with him, demanding of him a sign from heaven, tempting him.

Luke 11:29-30

And gathering the people unto him, he began to say, This is an evil generation: they seek a sign, and no sign shall be given it but the sign of Jonah the prophet.

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

Isaiah 38:7
And this shall be a sign unto thee from the LORD that the LORD will do this thing that he has spoken:
Matthew 16:1
The Pharisees and the Sadducees came to tempt him; they asked him to show them a sign from the heaven.
Mark 8:11
And the Pharisees came forth and began to argue with him, demanding of him a sign from heaven, tempting him.
Luke 11:29
And gathering the people unto him, he began to say, This is an evil generation: they seek a sign, and no sign shall be given it but the sign of Jonah the prophet.