Exodus 4:23 uses the identical 'if you refuse to let him go' formula, warning of the firstborn's death.

Exodus 8:2 repeats the same conditional warning for the plague of frogs.

Exodus 10:4 repeats the same conditional warning for the locust plague.

Exodus 7:14 states Pharaoh refuses to let the people go—the same narrative context, setting up the plague warning in Exodus 9:2.

Isaiah 1:20 uses the same 'if you refuse and rebel' formula, promising destruction—directly echoing Exodus 9:2's conditional warning.

Leviticus 26:14-16 warns Israel of covenant curses for disobedience, parallel to the conditional judgment on Pharaoh.

Leviticus 26:23 continues the covenant curse sequence, emphasizing refusal to turn — similar to Pharaoh's hardness.

Leviticus 26:24 intensifies judgment for continued disobedience, mirroring the escalating plagues.

Leviticus 26:27 repeats the conditional 'if you will not listen' in the covenant curse series.

Leviticus 26:28 culminates the curse sequence with fury and sevenfold discipline — parallel to plagues.

Psalm 7:12 warns that God prepares judgment for the unrepentant, echoing the conditional plague threat against Pharaoh.