Exodus 4:8

"If they will not believe thee, neither hear the voice of the first token: yet will they believe the voice of the second token.

Exodus 4:30-31

And Aaron told all the words which the LORD had spoken unto Moses, and did the miracles in the sight of the people,

Deuteronomy 32:39

"'See, now, how that I - I am he: and that there is no God but I. I can kill, and make alive; and what I have smitten, that I can heal. Neither is there that can deliver any man out of my hand.

2 Kings 5:7

And when the king of Israel had read the letter, he rent his clothes and said, "Am I God, to slay and to make alive, that he should send to me, for to deliver a man from his leprosy? But consider, I pray you, and see how he picketh quarrels with me!"

Job 5:18

For though he make a wound, he giveth a medicine again: though he smite, his hand maketh whole again.

Isaiah 28:10

Command that may be commanded, bid that may be bidden, forbid that may be forbidden, keep back that may be kept back, here a little, there a little.

John 12:37

And though he had done so many miracles before them, yet believed not they on him,

Treasury of Scripture Knowledge

Summary

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.

General references

Bible References

If they

Exodus 4:30
And Aaron told all the words which the LORD had spoken unto Moses, and did the miracles in the sight of the people,
Isaiah 28:10
Command that may be commanded, bid that may be bidden, forbid that may be forbidden, keep back that may be kept back, here a little, there a little.
John 12:37
And though he had done so many miracles before them, yet believed not they on him,

That they

Deuteronomy 32:39
"'See, now, how that I - I am he: and that there is no God but I. I can kill, and make alive; and what I have smitten, that I can heal. Neither is there that can deliver any man out of my hand.
2 Kings 5:7
And when the king of Israel had read the letter, he rent his clothes and said, "Am I God, to slay and to make alive, that he should send to me, for to deliver a man from his leprosy? But consider, I pray you, and see how he picketh quarrels with me!"
Job 5:18
For though he make a wound, he giveth a medicine again: though he smite, his hand maketh whole again.

General references

1 Kings 13:3
And he gave them the same time a sign, saying, "This is the sign, of that the LORD hath promised: Behold, the altar shall rent and the ashes that are in it shall fall out."