Exodus 8:2

But if you refuse to let them go, behold, I will afflict your whole territory with frogs.

Exodus 7:14

Jehovah said to Moses: Pharaoh is being stubborn. He will not let my people go.

Exodus 9:2

If you refuse to let them go and continue to hold them in slavery,

Psalm 78:45

He sent a swarm of flies that bit them and frogs that ruined them.

Psalm 105:30

He made their land swarm with frogs, even in the kings' bedrooms.

Revelation 16:13-14

I saw three unclean spirits like frogs come out of the mouth of the dragon, and out of the mouth of the beast, and out of the mouth of the false prophet.

Treasury of Scripture Knowledge

Summary

And if thou refuse to let them go, behold, I will smite all thy borders with frogs:

General references

Bible References

Refuse

Exodus 7:14
Jehovah said to Moses: Pharaoh is being stubborn. He will not let my people go.
Exodus 9:2
If you refuse to let them go and continue to hold them in slavery,

Frogs

Psalm 78:45
He sent a swarm of flies that bit them and frogs that ruined them.
Psalm 105:30
He made their land swarm with frogs, even in the kings' bedrooms.
Revelation 16:13
I saw three unclean spirits like frogs come out of the mouth of the dragon, and out of the mouth of the beast, and out of the mouth of the false prophet.

General references

Exodus 9:2
If you refuse to let them go and continue to hold them in slavery,