2 Kings 20:9
And Isaiah said, This sign shall you 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 you from the LORD, that the LORD will do this thing that he has spoken;
Matthew 16:1-4
The Pharisees also with the Sadducees came, and testing him desired that he would show them a sign from heaven.
Mark 8:11-12
And the Pharisees came forth, and began to question him, seeking of him a sign from heaven, testing him.
Luke 11:29-30
And when the people were gathered thick together, he began to say, This is an evil generation: they seek a sign; and there shall no sign be given it, but the sign of Jonah the prophet.