In Exodus 7:4, God foretells the judgments that will come because of Pharaoh's hardness; here that hardness begins to unfold.

Exodus 7:22 repeats the same hardening after the Nile turned to blood — immediate narrative continuation and confirmation.

Exodus 8:15 records another hardening after the frogs, continuing the pattern from 7:13.

Exodus 14:17 describes God hardening the Egyptians' hearts at the Red Sea, extending the hardening theme to final judgment.

In Exodus 4:21, God predicted He would harden Pharaoh's heart; here that hardening begins to be fulfilled.

In Exodus 10:1, God explicitly says He hardened Pharaoh's heart, revealing the divine purpose behind the hardening in 7:13.

Exodus 10:20 repeats that the Lord hardened Pharaoh's heart after the locusts, echoing 7:13.

Exodus 10:27 again states the Lord hardened Pharaoh's heart after darkness, continuing the same pattern.

Exodus 14:4 shows God actively hardening Pharaoh's heart to pursue Israel, continuing the theme of hardening for God's glory.

Exodus 11:10 summarizes the final outcome: after all wonders, Pharaoh's heart remained hardened, echoing the pattern from earlier.

Exodus 9:12 shows the LORD hardening Pharaoh's heart — a shift from self-hardening to divine hardening, deepening the theological cause.

Exodus 8:32 shows Pharaoh hardening his heart again after the frogs — step in the same hardening progression.

Deuteronomy 2:30 recounts God hardening Sihon's heart, a parallel to Pharaoh's hardening, showing a pattern of divine sovereignty.

Zechariah 7:12 explicitly says they made their hearts as hard as flint and would not listen — directly mirroring the hardening in Exodus 7:13.

1 Samuel 6:6 explicitly warns the Philistines not to harden their hearts like Pharaoh, directly recalling this event.

Romans 9:18 references God's hardening of Pharaoh as an example of His sovereign will, directly building on this narrative.

John 12:40 uses the language of hardened hearts to describe spiritual blindness, paralleling the theme of divine judgment.

Hebrews 3:8 continues the warning, referencing the rebellion in the wilderness — a call not to imitate Pharaoh's or Israel's hardening.

Romans 1:28 shows God giving people over to a depraved mind after they reject knowledge of God — similar pattern of rejection leading to hardening.

Romans 2:5 speaks of stubbornness and an unrepentant heart storing up wrath — parallels the unrepentant heart of Pharaoh.

Hebrews 3:13 warns against being hardened by sin's deceitfulness — a different cause of hardening, but the result is similar to Pharaoh's.