John 2:18

Then the Jews said to him, "What sign do you show to us, since you do this?"

John 6:30

So they said to him, "What sign will you perform then, that we may see it and believe you? What work will you do?

Matthew 12:39

But he answered them, "An evil and adulterous generation seeks for a sign; but no sign will be given to it except the sign of the prophet Jonah.

John 10:38

but if I do them, even though you do not believe me, believe the works, that you may know and understand that the Father is in me, and I am in the Father."

Treasury of Scripture Knowledge

Summary

When Pharaoh shall speak unto you, saying, Shew a miracle for you: then thou shalt say unto Aaron, Take thy rod, and cast it before Pharaoh, and it shall become a serpent.

Bible References

Shew

Matthew 12:39
But he answered them, "An evil and adulterous generation seeks for a sign; but no sign will be given to it except the sign of the prophet Jonah.
John 2:18
Then the Jews said to him, "What sign do you show to us, since you do this?"
John 6:30
So they said to him, "What sign will you perform then, that we may see it and believe you? What work will you do?
John 10:38
but if I do them, even though you do not believe me, believe the works, that you may know and understand that the Father is in me, and I am in the Father."