Exodus 4:8

"{And} if they do not believe you and they will not listen to the voice of the former sign, [then] they will believe the voice of the latter sign.

Exodus 4:30-31

And Aaron spoke all the words that Yahweh had spoken to Moses, and he did the signs before the eyes of the people.

Deuteronomy 32:39

See, now, that I, [even] I [am] he, and there is not a god besides me; I put to death and I give life; I wound and I heal; there is not [one] who delivers from my hand!

2 Kings 5:7

It happened that when the king of Israel read the letter, he tore his clothes and said, "Am I God to cause death or to give life? This man [is] sending a man to me to cure his disease. Indeed! But know and see that he seeks an opportunity against me."

Job 5:18

for he himself wounds, but he binds up; he strikes, but his hands heal.

Isaiah 28:10

For [it is] blah-blah upon blah-blah, blah-blah upon blah-blah, gah-gah upon gah-gah, gah-gah upon gah-gah, a little here, a little there.

John 12:37

But as many signs [as] he had performed before them, they did not believe in 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 spoke all the words that Yahweh had spoken to Moses, and he did the signs before the eyes of the people.
Isaiah 28:10
For [it is] blah-blah upon blah-blah, blah-blah upon blah-blah, gah-gah upon gah-gah, gah-gah upon gah-gah, a little here, a little there.
John 12:37
But as many signs [as] he had performed before them, they did not believe in him,

That they

Deuteronomy 32:39
See, now, that I, [even] I [am] he, and there is not a god besides me; I put to death and I give life; I wound and I heal; there is not [one] who delivers from my hand!
2 Kings 5:7
It happened that when the king of Israel read the letter, he tore his clothes and said, "Am I God to cause death or to give life? This man [is] sending a man to me to cure his disease. Indeed! But know and see that he seeks an opportunity against me."
Job 5:18
for he himself wounds, but he binds up; he strikes, but his hands heal.

General references

1 Kings 13:3
He gave a sign on that day, saying, "This [is] the sign that Yahweh has predetermined: Look, [this] altar will be torn [apart], and the ashes that [are] on it will be poured out."