And he gave a sign the same day, saying, This is the sign which the Lord hath spoken; Behold, the altar shall be rent, and the ashes that are upon it shall be poured out.
And it shall come to pass, if they will not believe thee, neither hearken to the voice of the first sign, that they will believe the voice of the latter sign.
When Pharaoh shall speak unto you, saying, Show a miracle for you: then thou shalt say unto Aaron, Take thy rod, and cast it before Pharaoh, and it shall become a serpent.
that say, Let him make speed, and hasten his work, that we may see it: and let the counsel of the Holy One of Israel draw nigh and come, that we may know it!