2 Kings 20:9
And Isaiah said, "This sign shalt thou have of the LORD, that the LORD will do that he hath spoken: shall the shadow go forward ten degrees, or go back again ten degrees?"
Isaiah 38:7-8
And take thee this token of the LORD, that he will do it, as he hath spoken:
Matthew 16:1-4
Then came to him the Pharisees with the Sadducees also, and did tempt him, desiring him to show them some sign from heaven.
Mark 8:11-12
And the Pharisees came forth, and began to dispute with him, seeking of him a sign from heaven and tempting him,
Luke 11:29-30
When the people were gathered thick together, he began to say, This is an evil nation. They seek a sign, and there shall no sign be given them, but the sign of Jonah the prophet.